--- sd/source/ui/framework/factories/BasicPaneFactory.cxx	2019-12-05 20:59:23.000000000 +0100
+++ sd/source/ui/framework/factories/BasicPaneFactory.cxx	2020-03-17 20:51:22.331805000 +0100
@@ -324,7 +324,7 @@
 void SAL_CALL BasicPaneFactory::disposing (
     const lang::EventObject& rEventObject)
 {
-    if (mxConfigurationControllerWeak == rEventObject.Source)
+    if (mxConfigurationControllerWeak.get() == rEventObject.Source)
     {
         mxConfigurationControllerWeak.clear();
     }