diff --git a/src/kernel/qapplication.cpp b/src/kernel/qapplication.cpp
index feeaf191..210f2aa1 100644
--- a/src/kernel/qapplication.cpp
+++ b/src/kernel/qapplication.cpp
@@ -1241,9 +1241,13 @@ TQApplication::~TQApplication()
 	tqDebug( "Widgets left: %i    Max widgets: %i \n", TQWidget::instanceCounter, TQWidget::maxInstances );
     }
 #ifndef QT_NO_SESSIONMANAGER
-    delete session_manager;
+    if ( session_manager ) {
+	delete session_manager;
+    }
     session_manager = 0;
-    delete session_key;
+    if ( session_key ) {
+	delete session_key;
+    }
     session_key = 0;
 #endif //QT_NO_SESSIONMANAGER