diff --git a/include/ALabel.hpp b/include/ALabel.hpp
index 00daf3c..6befe03 100644
--- a/include/ALabel.hpp
+++ b/include/ALabel.hpp
@@ -7,7 +7,7 @@ namespace waybar {
 
 class ALabel : public IModule {
  public:
-  ALabel(const Json::Value&, const std::string format);
+  ALabel(const Json::Value&, const std::string format, uint16_t interval = 0);
   virtual ~ALabel() = default;
   virtual auto update() -> void;
   virtual std::string getIcon(uint16_t, const std::string& alt = "");
@@ -19,6 +19,7 @@ class ALabel : public IModule {
   const Json::Value& config_;
   std::string format_;
   std::mutex mutex_;
+  const std::chrono::seconds interval_;
 
  private:
   bool handleToggle(GdkEventButton* const& ev);
diff --git a/include/client.hpp b/include/client.hpp
index 0155105..f3ef135 100644
--- a/include/client.hpp
+++ b/include/client.hpp
@@ -29,6 +29,7 @@ class Client {
   private:
     void bindInterfaces();
     auto setupCss();
+    const std::string getValidPath(std::vector<std::string> paths);
 
     static void handleGlobal(void *data, struct wl_registry *registry,
       uint32_t name, const char *interface, uint32_t version);
diff --git a/include/modules/battery.hpp b/include/modules/battery.hpp
index f4fec2e..c3eadba 100644
--- a/include/modules/battery.hpp
+++ b/include/modules/battery.hpp
@@ -30,8 +30,8 @@ class Battery : public ALabel {
     static inline const fs::path data_dir_ = "/sys/class/power_supply/";
   
     void worker();
-    std::tuple<uint16_t, std::string> getInfos();
-    std::string getState(uint16_t);
+    const std::tuple<uint8_t, std::string> getInfos() const;
+    const std::string getState(uint8_t) const;
 
     util::SleeperThread thread_;
     util::SleeperThread thread_timer_;
diff --git a/include/modules/sni/host.hpp b/include/modules/sni/host.hpp
index 5f952fd..6c6618e 100644
--- a/include/modules/sni/host.hpp
+++ b/include/modules/sni/host.hpp
@@ -34,8 +34,8 @@ class Host {
     GCancellable* cancellable_ = nullptr;
     SnWatcher* watcher_ = nullptr;
     const Json::Value &config_;
-    std::function<void(std::unique_ptr<Item>&)> on_add_;
-    std::function<void(std::unique_ptr<Item>&)> on_remove_;
+    const std::function<void(std::unique_ptr<Item>&)> on_add_;
+    const std::function<void(std::unique_ptr<Item>&)> on_remove_;
 };
 
 }
diff --git a/include/modules/sni/watcher.hpp b/include/modules/sni/watcher.hpp
index 6e925fb..79f5cbf 100644
--- a/include/modules/sni/watcher.hpp
+++ b/include/modules/sni/watcher.hpp
@@ -8,7 +8,7 @@ namespace waybar::modules::SNI {
 class Watcher {
 public:
   Watcher();
-  ~Watcher();
+  ~Watcher() = default;
 
 private:
   typedef enum { GF_WATCH_TYPE_HOST, GF_WATCH_TYPE_ITEM } GfWatchType;
@@ -22,7 +22,7 @@ private:
     guint watch_id;
   } GfWatch;
 
-  static void busAcquired(GDBusConnection *, const gchar *, gpointer);
+  void busAcquired(const Glib::RefPtr<Gio::DBus::Connection>&, Glib::ustring);
   static gboolean handleRegisterHost(Watcher *, GDBusMethodInvocation *,
                                      const gchar *);
   static gboolean handleRegisterItem(Watcher *, GDBusMethodInvocation *,
diff --git a/meson.build b/meson.build
index 844cda7..4dc9db6 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project(
     'waybar', 'cpp', 'c',
-    version: '0.2.1',
+    version: '0.2.2',
     license: 'MIT',
     default_options : [
         'cpp_std=c++17',
diff --git a/src/ALabel.cpp b/src/ALabel.cpp
index 9dd590e..0a1c2b5 100644
--- a/src/ALabel.cpp
+++ b/src/ALabel.cpp
@@ -3,10 +3,11 @@
 
 #include <iostream>
 
-waybar::ALabel::ALabel(const Json::Value& config, const std::string format)
+waybar::ALabel::ALabel(const Json::Value& config, const std::string format, uint16_t interval)
   : config_(config),
     format_(config_["format"].isString() ? config_["format"].asString() : format),
-    default_format_(format_)
+    interval_(std::chrono::seconds(config_["interval"].isUInt()
+      ? config_["interval"].asUInt() : interval)), default_format_(format_)
 {
   event_box_.add(label_);
 	if (config_["max-length"].isUInt()) {
@@ -20,17 +21,12 @@ waybar::ALabel::ALabel(const Json::Value& config, const std::string format)
   }
 
   // configure events' user commands
-  if (config_["on-click"].isString()) {
+  if (config_["on-click"].isString() || config_["on-click-right"].isString()) {
     event_box_.add_events(Gdk::BUTTON_PRESS_MASK);
     event_box_.signal_button_press_event().connect(
       sigc::mem_fun(*this, &ALabel::handleToggle));
   }
-  if (config_["on-scroll-up"].isString()) {
-    event_box_.add_events(Gdk::SCROLL_MASK);
-    event_box_.signal_scroll_event().connect(
-      sigc::mem_fun(*this, &ALabel::handleScroll));
-  }
-  if (config_["on-scroll-down"].isString()) {
+  if (config_["on-scroll-up"].isString() || config_["on-scroll-down"].isString()) {
     event_box_.add_events(Gdk::SCROLL_MASK);
     event_box_.signal_scroll_event().connect(
       sigc::mem_fun(*this, &ALabel::handleScroll));
@@ -44,6 +40,8 @@ auto waybar::ALabel::update() -> void {
 bool waybar::ALabel::handleToggle(GdkEventButton* const& e) {
   if (config_["on-click"].isString() && e->button == 1) {
     waybar::util::command::forkExec(config_["on-click"].asString());
+  } else if (config_["on-click-right"].isString() && e->button == 3) {
+    waybar::util::command::forkExec(config_["on-click-right"].asString());
   } else {
     alt = !alt;
     if (alt) {
diff --git a/src/bar.cpp b/src/bar.cpp
index 961a321..b28e920 100644
--- a/src/bar.cpp
+++ b/src/bar.cpp
@@ -184,7 +184,13 @@ void waybar::Bar::getModules(const Factory& factory, const std::string& pos)
         if (pos == "modules-right") {
           modules_right_.emplace_back(module);
         }
-        module->dp.connect([module] { module->update(); });
+        module->dp.connect([module, &name] {
+          try {
+            module->update();
+          } catch (const std::exception& e) {
+            std::cerr << name.asString() + ": " + e.what() << std::endl;
+          }
+        });
       } catch (const std::exception& e) {
         std::cerr << e.what() << std::endl;
       }
diff --git a/src/client.cpp b/src/client.cpp
index 945e38a..daa52cf 100644
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -12,38 +12,43 @@ waybar::Client::Client(int argc, char* argv[])
     throw std::runtime_error("Bar need to run under Wayland");
   }
   wl_display = gdk_wayland_display_get_wl_display(gdk_display->gobj());
-  auto getFirstValidPath = [] (std::vector<std::string> possiblePaths) {
-    wordexp_t p;
 
-    for (const std::string &path: possiblePaths) {
-      if (wordexp(path.c_str(), &p, 0) == 0) {
-        if (access(*p.we_wordv, F_OK) == 0) {
-          std::string result = *p.we_wordv;
-          wordfree(&p);
-          return result;
-        }
-        wordfree(&p);
-      }
-    }
-
-    return std::string();
-  };
-
-  config_file = getFirstValidPath({
+  config_file = getValidPath({
     "$XDG_CONFIG_HOME/waybar/config",
     "$HOME/waybar/config",
     "/etc/xdg/waybar/config",
     "./resources/config",
   });
-  css_file = getFirstValidPath({
+  css_file = getValidPath({
     "$XDG_CONFIG_HOME/waybar/style.css",
     "$HOME/waybar/style.css",
     "/etc/xdg/waybar/style.css",
     "./resources/style.css",
   });
+  if (css_file.empty() || config_file.empty()) {
+    throw std::runtime_error("Missing required resources files");
+  }
   std::cout << "Resources files: " + config_file + ", " + css_file << std::endl;
 }
 
+const std::string waybar::Client::getValidPath(std::vector<std::string> paths)
+{
+  wordexp_t p;
+
+  for (const std::string &path: paths) {
+    if (wordexp(path.c_str(), &p, 0) == 0) {
+      if (access(*p.we_wordv, F_OK) == 0) {
+        std::string result = *p.we_wordv;
+        wordfree(&p);
+        return result;
+      }
+      wordfree(&p);
+    }
+  }
+
+  return std::string();
+}
+
 void waybar::Client::handleGlobal(void *data, struct wl_registry *registry,
   uint32_t name, const char *interface, uint32_t version)
 {
diff --git a/src/main.cpp b/src/main.cpp
index 85e120e..54cc9a0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -15,7 +15,7 @@ int main(int argc, char* argv[])
     waybar::client = &c;
     std::signal(SIGUSR1, [] (int /*signal*/) {
       for (auto& bar : waybar::client->bars) {
-        (*bar).toggle();
+        bar->toggle();
       }
     });
 
diff --git a/src/modules/battery.cpp b/src/modules/battery.cpp
index a9b98b5..9fae5ed 100644
--- a/src/modules/battery.cpp
+++ b/src/modules/battery.cpp
@@ -1,7 +1,7 @@
 #include "modules/battery.hpp"
 
 waybar::modules::Battery::Battery(const Json::Value& config)
-  : ALabel(config, "{capacity}%")
+  : ALabel(config, "{capacity}%", 60)
 {
   try {
     if (config_["bat"].isString()) {
@@ -46,9 +46,8 @@ void waybar::modules::Battery::worker()
 {
   // Trigger first values
   update();
-  uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 60;
-  thread_timer_ = [this, interval] {
-    thread_.sleep_for(chrono::seconds(interval));
+  thread_timer_ = [this] {
+    thread_.sleep_for(interval_);
     dp.emit();
   };
   thread_ = [this] {
@@ -63,7 +62,7 @@ void waybar::modules::Battery::worker()
   };
 }
 
-std::tuple<uint16_t, std::string> waybar::modules::Battery::getInfos()
+const std::tuple<uint8_t, std::string> waybar::modules::Battery::getInfos() const
 {
   try {
     uint16_t total = 0;
@@ -86,10 +85,10 @@ std::tuple<uint16_t, std::string> waybar::modules::Battery::getInfos()
   }
 }
 
-std::string waybar::modules::Battery::getState(uint16_t capacity)
+const std::string waybar::modules::Battery::getState(uint8_t capacity) const
 {
   // Get current state
-  std::vector<std::pair<std::string, uint16_t>> states;
+  std::vector<std::pair<std::string, uint8_t>> states;
   if (config_["states"].isObject()) {
     for (auto it = config_["states"].begin(); it != config_["states"].end(); ++it) {
       if (it->isUInt() && it.key().isString()) {
@@ -101,16 +100,16 @@ std::string waybar::modules::Battery::getState(uint16_t capacity)
   std::sort(states.begin(), states.end(), [](auto &a, auto &b) {
     return a.second < b.second;
   });
-  std::string validState = "";
-  for (auto state : states) {
-    if (capacity <= state.second && validState.empty()) {
+  std::string valid_state;
+  for (auto const& state : states) {
+    if (capacity <= state.second && valid_state.empty()) {
       label_.get_style_context()->add_class(state.first);
-      validState = state.first;
+      valid_state = state.first;
     } else {
       label_.get_style_context()->remove_class(state.first);
     }
   }
-  return validState;
+  return valid_state;
 }
 
 auto waybar::modules::Battery::update() -> void
diff --git a/src/modules/clock.cpp b/src/modules/clock.cpp
index 5cc7459..c4462ed 100644
--- a/src/modules/clock.cpp
+++ b/src/modules/clock.cpp
@@ -1,16 +1,17 @@
 #include "modules/clock.hpp"
 
 waybar::modules::Clock::Clock(const Json::Value& config)
-  : ALabel(config, "{:%H:%M}")
+  : ALabel(config, "{:%H:%M}", 60)
 {
   label_.set_name("clock");
-  uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 60;
-  thread_ = [this, interval] {
+  thread_ = [this] {
     auto now = waybar::chrono::clock::now();
     dp.emit();
-    auto timeout = std::chrono::floor<std::chrono::seconds>(now
-      + std::chrono::seconds(interval));
-    thread_.sleep_until(timeout);
+    auto timeout = std::chrono::floor<std::chrono::seconds>(now + interval_);
+    auto time_s = std::chrono::time_point_cast<std::chrono::seconds>(timeout);
+    auto sub_m =
+      std::chrono::duration_cast<std::chrono::seconds>(time_s.time_since_epoch()).count() % 60;
+    thread_.sleep_until(timeout - std::chrono::seconds(sub_m - 1));
   };
 }
 
diff --git a/src/modules/cpu.cpp b/src/modules/cpu.cpp
index 586bece..91e177d 100644
--- a/src/modules/cpu.cpp
+++ b/src/modules/cpu.cpp
@@ -1,28 +1,23 @@
 #include "modules/cpu.hpp"
 
 waybar::modules::Cpu::Cpu(const Json::Value& config)
-  : ALabel(config, "{usage}%")
+  : ALabel(config, "{usage}%", 10)
 {
   label_.set_name("cpu");
-  uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 10;
-  thread_ = [this, interval] {
+  thread_ = [this] {
     dp.emit();
-    thread_.sleep_for(chrono::seconds(interval));
+    thread_.sleep_for(interval_);
   };
 }
 
 auto waybar::modules::Cpu::update() -> void
 {
-  try {
-    // TODO: as creating dynamic fmt::arg arrays is buggy we have to calc both
-    auto cpu_load = getCpuLoad();
-    auto [cpu_usage, tooltip] = getCpuUsage();
-    label_.set_tooltip_text(tooltip);
-    label_.set_markup(fmt::format(format_,
-      fmt::arg("load", cpu_load), fmt::arg("usage", cpu_usage)));
-  } catch (const std::exception& e) {
-    std::cerr << e.what() << std::endl;
-  }
+  // TODO: as creating dynamic fmt::arg arrays is buggy we have to calc both
+  auto cpu_load = getCpuLoad();
+  auto [cpu_usage, tooltip] = getCpuUsage();
+  label_.set_tooltip_text(tooltip);
+  label_.set_markup(fmt::format(format_,
+    fmt::arg("load", cpu_load), fmt::arg("usage", cpu_usage)));
 }
 
 uint16_t waybar::modules::Cpu::getCpuLoad()
diff --git a/src/modules/custom.cpp b/src/modules/custom.cpp
index a00459b..74ae0f2 100644
--- a/src/modules/custom.cpp
+++ b/src/modules/custom.cpp
@@ -4,20 +4,20 @@ waybar::modules::Custom::Custom(const std::string name,
   const Json::Value& config)
   : ALabel(config, "{}"), name_(name)
 {
-  if (!config_["exec"].isString()) {
-    throw std::runtime_error(name_ + " has no exec path.");
-  }
-  if (config_["interval"].isUInt()) {
-    delayWorker();
+  if (config_["exec"].isString()) {
+    if (interval_.count() > 0) {
+      delayWorker();
+    } else {
+      continuousWorker();
+    }
   } else {
-    continuousWorker();
+      update();
   }
 }
 
 void waybar::modules::Custom::delayWorker()
 {
-  auto interval = config_["interval"].asUInt();
-  thread_ = [this, interval] {
+  thread_ = [this] {
     bool can_update = true;
     if (config_["exec-if"].isString()) {
       auto res = waybar::util::command::exec(config_["exec-if"].asString());
@@ -31,7 +31,7 @@ void waybar::modules::Custom::delayWorker()
       output_ = waybar::util::command::exec(config_["exec"].asString());
       dp.emit();
     }
-    thread_.sleep_for(chrono::seconds(interval));
+    thread_.sleep_for(interval_);
   };
 }
 
@@ -67,7 +67,7 @@ void waybar::modules::Custom::continuousWorker()
 auto waybar::modules::Custom::update() -> void
 {
   // Hide label if output is empty
-  if (output_.out.empty() || output_.exit_code != 0) {
+  if (config_["exec"].isString() && (output_.out.empty() || output_.exit_code != 0)) {
     label_.hide();
     label_.set_name("");
   } else {
@@ -133,4 +133,4 @@ void waybar::modules::Custom::parseOutputJson()
     class_ = parsed["class"].asString();
     break;
   }
-}
\ No newline at end of file
+}
diff --git a/src/modules/memory.cpp b/src/modules/memory.cpp
index 3464cd7..591c32a 100644
--- a/src/modules/memory.cpp
+++ b/src/modules/memory.cpp
@@ -1,12 +1,11 @@
 #include "modules/memory.hpp"
 
 waybar::modules::Memory::Memory(const Json::Value& config)
-  : ALabel(config, "{}%")
+  : ALabel(config, "{}%", 30)
 {
-  uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 30;
-  thread_ = [this, interval] {
+  thread_ = [this] {
     dp.emit();
-    thread_.sleep_for(chrono::seconds(interval));
+    thread_.sleep_for(interval_);
   };
 }
 
diff --git a/src/modules/network.cpp b/src/modules/network.cpp
index 08901ae..c73ed00 100644
--- a/src/modules/network.cpp
+++ b/src/modules/network.cpp
@@ -1,7 +1,7 @@
 #include "modules/network.hpp"
 
 waybar::modules::Network::Network(const Json::Value& config)
-  : ALabel(config, "{ifname}"), family_(AF_INET),
+  : ALabel(config, "{ifname}", 60), family_(AF_INET),
     signal_strength_dbm_(0), signal_strength_(0)
 {
   sock_fd_ = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
@@ -47,8 +47,10 @@ void waybar::modules::Network::worker()
 {
   thread_ = [this] {
     char buf[4096];
-    uint64_t len = netlinkResponse(sock_fd_, buf, sizeof(buf),
-      RTMGRP_LINK | RTMGRP_IPV4_IFADDR);
+    auto len = netlinkResponse(sock_fd_, buf, sizeof(buf), RTMGRP_LINK | RTMGRP_IPV4_IFADDR);
+    if (len == 0) {
+      return;
+    }
     bool need_update = false;
     for (auto nh = reinterpret_cast<struct nlmsghdr *>(buf); NLMSG_OK(nh, len);
       nh = NLMSG_NEXT(nh, len)) {
@@ -81,13 +83,14 @@ void waybar::modules::Network::worker()
       }
     }
     if (need_update) {
-      getInfo();
+      if (ifid_ > 0) {
+        getInfo();
+      }
       dp.emit();
     }
   };
-  uint32_t interval = config_["interval"].isUInt() ? config_["interval"].asUInt() : 60;
-  thread_timer_ = [this, interval] {
-    thread_.sleep_for(std::chrono::seconds(interval));
+  thread_timer_ = [this] {
+    thread_.sleep_for(interval_);
     if (ifid_ > 0) {
       getInfo();
       dp.emit();
@@ -320,13 +323,12 @@ int waybar::modules::Network::netlinkRequest(int fd, void *req,
 int waybar::modules::Network::netlinkResponse(int fd, void *resp,
   uint32_t resplen, uint32_t groups)
 {
-  int ret;
   struct sockaddr_nl sa = {};
   sa.nl_family = AF_NETLINK;
   sa.nl_groups = groups;
   struct iovec iov = { resp, resplen };
   struct msghdr msg = { &sa, sizeof(sa), &iov, 1, nullptr, 0, 0 };
-  ret = recvmsg(fd, &msg, 0);
+  auto ret = recvmsg(fd, &msg, 0);
   if (msg.msg_flags & MSG_TRUNC) {
     return -1;
   }
@@ -421,7 +423,7 @@ auto waybar::modules::Network::getInfo() -> void
 {
   struct nl_msg* nl_msg = nlmsg_alloc();
   if (nl_msg == nullptr) {
-    nl_socket_free(sk_);
+    nlmsg_free(nl_msg);
     return;
   }
   if (genlmsg_put(nl_msg, NL_AUTO_PORT, NL_AUTO_SEQ, nl80211_id_, 0, NLM_F_DUMP,
diff --git a/src/modules/sni/watcher.cpp b/src/modules/sni/watcher.cpp
index 0cb714e..59dc213 100644
--- a/src/modules/sni/watcher.cpp
+++ b/src/modules/sni/watcher.cpp
@@ -5,37 +5,28 @@
 using namespace waybar::modules::SNI;
 
 Watcher::Watcher()
-{
-  GBusNameOwnerFlags flags = static_cast<GBusNameOwnerFlags>(
-    G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT
-    | G_BUS_NAME_OWNER_FLAGS_REPLACE);
-  bus_name_id_ = g_bus_own_name(G_BUS_TYPE_SESSION,
-    "org.kde.StatusNotifierWatcher", flags,
-    &Watcher::busAcquired, nullptr, nullptr, this, nullptr);
-  watcher_ = sn_watcher_skeleton_new();
-  sn_watcher_set_protocol_version(watcher_, 1);
-}
-
-Watcher::~Watcher()
+  : bus_name_id_(Gio::DBus::own_name(Gio::DBus::BusType::BUS_TYPE_SESSION,
+    "org.kde.StatusNotifierWatcher", sigc::mem_fun(*this, &Watcher::busAcquired),
+    Gio::DBus::SlotNameAcquired(), Gio::DBus::SlotNameLost(),
+    Gio::DBus::BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT | Gio::DBus::BUS_NAME_OWNER_FLAGS_REPLACE)),
+    watcher_(sn_watcher_skeleton_new())
 {
 }
 
-void Watcher::busAcquired(GDBusConnection* connection, const gchar* name,
-  gpointer data)
+void Watcher::busAcquired(const Glib::RefPtr<Gio::DBus::Connection>& conn, Glib::ustring name)
 {
   GError* error = nullptr;
-  auto host = static_cast<SNI::Watcher*>(data);
-  g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(host->watcher_),
-    connection, "/StatusNotifierWatcher", &error);
+  g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(watcher_),
+    conn->gobj(), "/StatusNotifierWatcher", &error);
   if (error != nullptr) {
     std::cerr << error->message << std::endl;
     g_error_free(error);
     return;
   }
-  g_signal_connect_swapped(host->watcher_, "handle-register-item",
-    G_CALLBACK(&Watcher::handleRegisterItem), data);
-  g_signal_connect_swapped(host->watcher_, "handle-register-host",
-    G_CALLBACK(&Watcher::handleRegisterHost), data);
+  g_signal_connect_swapped(watcher_, "handle-register-item",
+    G_CALLBACK(&Watcher::handleRegisterItem), this);
+  g_signal_connect_swapped(watcher_, "handle-register-host",
+    G_CALLBACK(&Watcher::handleRegisterHost), this);
 }
 
 gboolean Watcher::handleRegisterHost(Watcher* obj,