diff --git a/gajim/common/zeroconf/zeroconf_avahi.py b/gajim/common/zeroconf/zeroconf_avahi.py
index ec31a7beb..22d198b36 100644
--- a/gajim/common/zeroconf/zeroconf_avahi.py
+++ b/gajim/common/zeroconf/zeroconf_avahi.py
@@ -89,7 +89,7 @@ class Zeroconf:
         if not self.connected:
             return
         if name != self.name:
-            for key in self.contacts:
+            for key in self.contacts.keys():  # pylint: disable=C0201
                 val = self.contacts[key]
                 if val[Constant.BARE_NAME] == name:
                     # try to reduce instead of delete first
diff --git a/gajim/common/zeroconf/zeroconf_bonjour.py b/gajim/common/zeroconf/zeroconf_bonjour.py
index 82a5d1c43..04eb307ac 100644
--- a/gajim/common/zeroconf/zeroconf_bonjour.py
+++ b/gajim/common/zeroconf/zeroconf_bonjour.py
@@ -98,7 +98,7 @@ class Zeroconf:
         if not self.connected:
             return
         if name != self.name:
-            for key in self.contacts:
+            for key in self.contacts.keys():  # pylint: disable=C0201
                 if self.contacts[key][Constant.NAME] == name:
                     del self.contacts[key]
                     self.remove_serviceCB(key)
diff --git a/gajim/message_window.py b/gajim/message_window.py
index 6a30a116b..e6663155e 100644
--- a/gajim/message_window.py
+++ b/gajim/message_window.py
@@ -1107,7 +1107,7 @@ class MessageWindowMgr(GObject.GObject):
         return False
 
     def _on_window_destroy(self, win):
-        for k in self._windows:
+        for k in self._windows.keys():  # pylint: disable=C0201
             if self._windows[k].window == win:
                 self.emit('window-delete', self._windows[k])
                 del self._windows[k]