diff --git a/include/LocklessRingBuffer.h b/include/LocklessRingBuffer.h
index 3b18dd475d6..d313fd72288 100644
--- a/include/LocklessRingBuffer.h
+++ b/include/LocklessRingBuffer.h
@@ -122,6 +122,7 @@ class LocklessRingBufferReader : public ringbuffer_reader_t<T>
 	void waitForData()
 	{
 		QMutex useless_lock;
+		useless_lock.lock();
 		m_notifier->wait(&useless_lock);
 		useless_lock.unlock();
 	}