diff --git a/src/video/videoframe.h b/src/video/videoframe.h
index 09340f2369..1119586735 100644
--- a/src/video/videoframe.h
+++ b/src/video/videoframe.h
@@ -78,7 +78,7 @@ class ReadWriteLocker
     }
 
 private:
-    QReadWriteLock* lock_;
+    QReadWriteLock* lock_ = nullptr;
 };
 
 struct ToxYUVFrame