--- a/dom/media/MediaStreamGraph.cpp
+++ b/dom/media/MediaStreamGraph.cpp
@@ -1474,16 +1474,24 @@ void
 MediaStreamGraphImpl::ForceShutDown(ShutdownTicket* aShutdownTicket)
 {
   NS_ASSERTION(NS_IsMainThread(), "Must be called on main thread");
   STREAM_LOG(LogLevel::Debug, ("MediaStreamGraph %p ForceShutdown", this));
   {
     MonitorAutoLock lock(mMonitor);
     mForceShutDown = true;
     mForceShutdownTicket = aShutdownTicket;
+    if (mLifecycleState == LIFECYCLE_THREAD_NOT_STARTED) {
+      // We *could* have just sent this a message to start up, so don't
+      // yank the rug out from under it.  Tell it to startup and let it
+      // shut down.
+      RefPtr<GraphDriver> driver = CurrentDriver();
+      MonitorAutoUnlock unlock(mMonitor);
+      driver->Start();
+    }
     EnsureNextIterationLocked();
   }
 }
 
 /* static */ StaticRefPtr<nsIAsyncShutdownBlocker> gMediaStreamGraphShutdownBlocker;
 
 namespace {