diff --git a/radicale/ical.py b/radicale/ical.py
index d9a899e..902d4cb 100644
--- a/radicale/ical.py
+++ b/radicale/ical.py
@@ -136,7 +136,6 @@ class Calendar(object):
         self.encoding = "utf-8"
         self.owner = path.split("/")[0]
         self.path = os.path.join(FOLDER, path.replace("/", os.path.sep))
-        self.ctag = self.etag
 
     @staticmethod
     def _parse(text, item_types, name=None):
@@ -186,8 +185,6 @@ class Calendar(object):
         If ``name`` is given, give this name to new items in ``text``.
 
         """
-        self.ctag = self.etag
-
         items = self.items
 
         for new_item in self._parse(text, (Timezone, Event, Todo), name):
@@ -198,7 +195,6 @@ class Calendar(object):
 
     def remove(self, name):
         """Remove object named ``name`` from calendar."""
-        self.ctag = self.etag
         todos = [todo for todo in self.todos if todo.name != name]
         events = [event for event in self.events if event.name != name]
 
@@ -207,7 +203,6 @@ class Calendar(object):
 
     def replace(self, name, text):
         """Replace content by ``text`` in objet named ``name`` in calendar."""
-        self.ctag = self.etag
         self.remove(name)
         self.append(name, text)
 
diff --git a/radicale/xmlutils.py b/radicale/xmlutils.py
index a4c32f3..2ba578b 100644
--- a/radicale/xmlutils.py
+++ b/radicale/xmlutils.py
@@ -128,11 +128,6 @@ def propfind(path, xml_request, calendar):
         element.text = calendar.etag
         prop.append(element)
 
-    if _tag("CS", "getctag") in props:
-        element = ET.Element(_tag("CS", "getctag"))
-        element.text = calendar.ctag
-        prop.append(element)
-
     status = ET.Element(_tag("D", "status"))
     status.text = _response(200)
     propstat.append(status)
@@ -186,19 +181,6 @@ def report(path, xml_request, calendar):
             path = hreference
             items = calendar.events + calendar.todos
 
-        if not items:
-            # TODO: Read rfc4791-9.[6|10] to find a right answer
-            response = ET.Element(_tag("D", "response"))
-            multistatus.append(response)
-
-            href = ET.Element(_tag("D", "href"))
-            href.text = path
-            response.append(href)
-
-            status = ET.Element(_tag("D", "status"))
-            status.text = _response(204)
-            response.append(status)
-
         for item in items:
             response = ET.Element(_tag("D", "response"))
             multistatus.append(response)