diff --git a/src/corelib/thread/qmutex.h b/src/corelib/thread/qmutex.h
index dd1455058da..90bd93adefe 100644
--- a/src/corelib/thread/qmutex.h
+++ b/src/corelib/thread/qmutex.h
@@ -75,8 +75,8 @@ public:
             unlockInternal();
     }
 
-    bool tryLock(int timeout = 0) QT_MUTEX_LOCK_NOEXCEPT {
-        return fastTryLock() || lockInternal(timeout);
+    bool tryLock() Q_DECL_NOTHROW {
+        return fastTryLock();
     }
 
     bool isRecursive();