diff --git a/src/kernel/qobject.cpp b/src/kernel/qobject.cpp
index 5c78c17b..62ea618b 100644
--- a/src/kernel/qobject.cpp
+++ b/src/kernel/qobject.cpp
@@ -769,6 +769,9 @@ 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 // TQT_THREAD_SUPPORT
 		    removeObjFromList( obj->senderObjects, this );
 		}
 	    }
@@ -2494,25 +2497,23 @@ bool TQObject::disconnectInternal( const TQObject *sender, int signal_index,
 	    c = clist->first();
 	    while ( c ) {			// for all receivers...
 		if ( r == 0 ) {			// remove all receivers
+		    if (c->object()->senderObjects) {
 #ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->lock();
-#endif // TQT_THREAD_SUPPORT
-		    removeObjFromList( c->object()->senderObjects, s );
-#ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->unlock();
+			TQMutexLocker locker(c->object()->senderObjects->listMutex);
 #endif // TQT_THREAD_SUPPORT
+			removeObjFromList( c->object()->senderObjects, s );
+		    }
 		    success = TRUE;
 		    c = clist->next();
 		} else if ( r == c->object() &&
 			    ( (member_index == -1) ||
 			      ((member_index == c->member()) && (c->memberType() == membcode)) ) ) {
+		    if (c->object()->senderObjects) {
 #ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->lock();
-#endif // TQT_THREAD_SUPPORT
-		    removeObjFromList( c->object()->senderObjects, s, TRUE );
-#ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->unlock();
+			TQMutexLocker locker(c->object()->senderObjects->listMutex);
 #endif // TQT_THREAD_SUPPORT
+			removeObjFromList( c->object()->senderObjects, s, TRUE );
+		    }
 		    success = TRUE;
 		    clist->remove();
 		    c = clist->current();
@@ -2531,25 +2532,23 @@ bool TQObject::disconnectInternal( const TQObject *sender, int signal_index,
 	c = clist->first();
 	while ( c ) {				// for all receivers...
 	    if ( r == 0 ) {			// remove all receivers
+		    if (c->object()->senderObjects) {
 #ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->lock();
-#endif // TQT_THREAD_SUPPORT
-		removeObjFromList( c->object()->senderObjects, s, TRUE );
-#ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->unlock();
+			TQMutexLocker locker(c->object()->senderObjects->listMutex);
 #endif // TQT_THREAD_SUPPORT
+			removeObjFromList( c->object()->senderObjects, s, TRUE );
+		    }
 		success = TRUE;
 		c = clist->next();
 	    } else if ( r == c->object() &&
 			( (member_index == -1) ||
 			  ((member_index == c->member()) && (c->memberType() == membcode)) ) ) {
+		    if (c->object()->senderObjects) {
 #ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->lock();
-#endif // TQT_THREAD_SUPPORT
-		removeObjFromList( c->object()->senderObjects, s, TRUE );
-#ifdef TQT_THREAD_SUPPORT
-		    if (c->object()->senderObjects) c->object()->senderObjects->listMutex->unlock();
+			TQMutexLocker locker(c->object()->senderObjects->listMutex);
 #endif // TQT_THREAD_SUPPORT
+			removeObjFromList( c->object()->senderObjects, s, TRUE );
+		    }
 		success = TRUE;
 		clist->remove();
 		c = clist->current();