diff --git a/src/Mod/AddonManager/addonmanager_connection_checker.py b/src/Mod/AddonManager/addonmanager_connection_checker.py
index d65553f10f..ead00add1e 100644
--- a/src/Mod/AddonManager/addonmanager_connection_checker.py
+++ b/src/Mod/AddonManager/addonmanager_connection_checker.py
@@ -76,8 +76,8 @@ class ConnectionCheckerGUI(QtCore.QObject):
     def cancel_network_check(self, _):
         """Cancel the check"""
         if not self.connection_checker.isFinished():
-            self.connection_checker.success.disconnect(self.launch)
-            self.connection_checker.failure.disconnect(self.network_connection_failed)
+            self.connection_checker.success.disconnect(self._check_succeeded)
+            self.connection_checker.failure.disconnect(self._network_connection_failed)
             self.connection_checker.requestInterruption()
             self.connection_checker.wait(500)
             self.connection_check_message.close()