1 files changed, 2 insertions, 0 deletions
diff --git a/src/quick/scenegraph/qsgthreadedrenderloop.cpp b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
index 106819e86e..ab94e61976 100644
--- a/src/quick/scenegraph/qsgthreadedrenderloop.cpp
+++ b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
@@ -1218,9 +1218,11 @@ QImage QSGThreadedRenderLoop::grab(QQuickWindow *window)
 
     QImage result;
     w->thread->mutex.lock();
+    m_lockedForSync = true;
     qCDebug(QSG_LOG_RENDERLOOP) << "- posting grab event";
     w->thread->postEvent(new WMGrabEvent(window, &result));
     w->thread->waitCondition.wait(&w->thread->mutex);
+    m_lockedForSync = false;
     w->thread->mutex.unlock();
 
     qCDebug(QSG_LOG_RENDERLOOP) << "- grab complete";