diff --git a/dom/media/ipc/VideoDecoderChild.cpp b/dom/media/ipc/VideoDecoderChild.cpp
index d1b1d23fca..f01d3c659f 100644
--- a/dom/media/ipc/VideoDecoderChild.cpp
+++ b/dom/media/ipc/VideoDecoderChild.cpp
@@ -238,6 +238,7 @@ VideoDecoderChild::Shutdown()
     SendShutdown();
   }
   mInitialized = false;
+  mCallback = nullptr;
 }
 
 bool