1 files changed, 7 insertions, 3 deletions
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp
index 527a842d17..d4d2d527d4 100644
--- a/src/corelib/kernel/qobject.cpp
+++ b/src/corelib/kernel/qobject.cpp
@@ -4288,9 +4288,13 @@ QMetaObject::Connection QObject::connectImpl(const QObject *sender, void **signa
     }
     int signal_index = -1;
     void *args[] = { &signal_index, signal };
-    senderMetaObject->static_metacall(QMetaObject::IndexOfMethod, 0, args);
-    if (signal_index < 0 || signal_index >= QMetaObjectPrivate::get(senderMetaObject)->signalCount) {
-        qWarning("QObject::connect: signal not found in %s", senderMetaObject->className());
+    for (; senderMetaObject && signal_index < 0; senderMetaObject = senderMetaObject->superClass()) {
+        senderMetaObject->static_metacall(QMetaObject::IndexOfMethod, 0, args);
+        if (signal_index >= 0 && signal_index < QMetaObjectPrivate::get(senderMetaObject)->signalCount)
+            break;
+    }
+    if (!senderMetaObject) {
+        qWarning("QObject::connect: signal not found in %s", sender->metaObject()->className());
         slotObj->destroyIfLastRef();
         return QMetaObject::Connection(0);
     }