diff --git a/syncplay/ui/GuiConfiguration.py b/syncplay/ui/GuiConfiguration.py
index ee0f0a8..c6f3a30 100755
--- a/syncplay/ui/GuiConfiguration.py
+++ b/syncplay/ui/GuiConfiguration.py
@@ -320,7 +320,7 @@ class ConfigDialog(QtWidgets.QDialog):
         try:
             self.lastCheckedForUpdates = settings.value("lastCheckedQt", None)
             if self.lastCheckedForUpdates:
-                if self.config["lastCheckedForUpdates"] is not None and self.config["lastCheckedForUpdates"] != "":
+                if self.config["lastCheckedForUpdates"] != None and self.config["lastCheckedForUpdates"] != "":
                     if self.lastCheckedForUpdates.toPython() > datetime.strptime(self.config["lastCheckedForUpdates"], "%Y-%m-%d %H:%M:%S.%f"):
                         self.config["lastCheckedForUpdates"] = self.lastCheckedForUpdates.toString("yyyy-MM-d HH:mm:ss.z")
                 else: