diff --git a/include/modules/sway/window.hpp b/include/modules/sway/window.hpp
index db80afe..e069606 100644
--- a/include/modules/sway/window.hpp
+++ b/include/modules/sway/window.hpp
@@ -34,6 +34,7 @@ class Window : public AIconLabel, public sigc::trackable {
   std::string app_id_;
   std::string old_app_id_;
   std::size_t app_nb_;
+  unsigned app_icon_size_{24};
   bool update_app_icon_{true};
   std::string app_icon_name_;
   util::JsonParser parser_;
diff --git a/man/waybar-sway-window.5.scd b/man/waybar-sway-window.5.scd
index bfb02b0..e475cea 100644
--- a/man/waybar-sway-window.5.scd
+++ b/man/waybar-sway-window.5.scd
@@ -75,6 +75,11 @@ Addressed by *sway/window*
 	default: false ++
 	Option to hide the application icon.
 
+*icon-size*: ++
+	typeof: integer ++
+	default: 24 ++
+	Option to change the size of the application icon.
+
 # REWRITE RULES
 
 *rewrite* is an object where keys are regular expressions and values are
diff --git a/src/modules/sway/window.cpp b/src/modules/sway/window.cpp
index f882106..caa09cc 100644
--- a/src/modules/sway/window.cpp
+++ b/src/modules/sway/window.cpp
@@ -15,6 +15,12 @@ namespace waybar::modules::sway {
 
 Window::Window(const std::string& id, const Bar& bar, const Json::Value& config)
     : AIconLabel(config, "window", id, "{}", 0, true), bar_(bar), windowId_(-1) {
+  // Icon size
+  if (config_["icon-size"].isUInt()) {
+    app_icon_size_ = config["icon-size"].asUInt();
+  }
+  image_.set_pixel_size(app_icon_size_);
+
   ipc_.subscribe(R"(["window","workspace"])");
   ipc_.signal_event.connect(sigc::mem_fun(*this, &Window::onEvent));
   ipc_.signal_cmd.connect(sigc::mem_fun(*this, &Window::onCmd));
@@ -99,7 +105,7 @@ void Window::updateAppIcon() {
     if (app_icon_name_.empty()) {
       image_.set_visible(false);
     } else {
-      image_.set_from_icon_name(app_icon_name_, Gtk::ICON_SIZE_LARGE_TOOLBAR);
+      image_.set_from_icon_name(app_icon_name_, Gtk::ICON_SIZE_INVALID);
       image_.set_visible(true);
     }
   }