diff --git a/src/kernel/qobject.cpp b/src/kernel/qobject.cpp
index b8f1a6ee..1e6d5583 100644
--- a/src/kernel/qobject.cpp
+++ b/src/kernel/qobject.cpp
@@ -777,6 +777,9 @@ TQObject::~TQObject()
 	    while( (c=cit.current()) ) {	// for each connected slot...
 		++cit;
 		if ( (obj=c->object()) ) {
+#ifdef TQT_THREAD_SUPPORT
+		    TQMutexLocker locker( obj->senderObjects->listMutex );
+#endif
 		    removeObjFromList( obj->senderObjects, this );
 		}
 	    }