diff --git a/modules/plugin/base/src/nsPluginHost.cpp b/modules/plugin/base/src/nsPluginHost.cpp
index 4b3541990858..b2cd3667dc63 100644
--- a/modules/plugin/base/src/nsPluginHost.cpp
+++ b/modules/plugin/base/src/nsPluginHost.cpp
@@ -5189,6 +5189,7 @@ nsPluginHost::PluginCrashed(nsNPAPIPlugin* aPlugin)
         objectContent->PluginCrashed();
       }
 
+      instancetag->mInstance->Stop();
       *pinstancetag = (*pinstancetag)->mNext;
       delete instancetag;
     }