diff --git a/src/corelib/tools/qsharedpointer.h b/src/corelib/tools/qsharedpointer.h
index 279ec36a28..af42d06991 100644
--- a/src/corelib/tools/qsharedpointer.h
+++ b/src/corelib/tools/qsharedpointer.h
@@ -108,11 +108,11 @@ public:
 
     ~QWeakPointer();
 
-    QWeakPointer<T> operator=(const QWeakPointer<T> &other);
-    QWeakPointer<T> operator=(const QSharedPointer<T> &other);
+    QWeakPointer<T> &operator=(const QWeakPointer<T> &other);
+    QWeakPointer<T> &operator=(const QSharedPointer<T> &other);
 
     QWeakPointer(const QObject *other);
-    QWeakPointer<T> operator=(const QObject *other);
+    QWeakPointer<T> &operator=(const QObject *other);
 
     void swap(QWeakPointer<T> &other);