diff --git a/src/video/camerasource.h b/src/video/camerasource.h
index 1a46b7989..8a28f8fe7 100644
--- a/src/video/camerasource.h
+++ b/src/video/camerasource.h
@@ -65,6 +65,7 @@ private:
     VideoMode mode;
     AVCodecContext* cctx, *cctxOrig;
     int videoStreamIndex;
+    QMutex biglock;
     std::atomic_bool _isOpen;
     std::atomic_bool streamBlocker;
     std::atomic_int subscriptions;