diff --git a/xpcom/glue/Monitor.h b/xpcom/glue/Monitor.h
index cd2d8d8aac00..6d6b3851cbaf 100644
--- a/xpcom/glue/Monitor.h
+++ b/xpcom/glue/Monitor.h
@@ -233,7 +233,7 @@ public:
 
     nsresult NotifyAll()
     {
-        return mMonitor->Notify();
+        return mMonitor->NotifyAll();
     }
 
 private: