diff --git a/mozilla/extensions/java/xpcom/src/nsJavaXPTCStubWeakRef.h b/mozilla/extensions/java/xpcom/src/nsJavaXPTCStubWeakRef.h
index a53ffce7989..b538eecb4c2 100644
--- a/mozilla/extensions/java/xpcom/src/nsJavaXPTCStubWeakRef.h
+++ b/mozilla/extensions/java/xpcom/src/nsJavaXPTCStubWeakRef.h
@@ -56,7 +56,7 @@ public:
   NS_DECL_NSIWEAKREFERENCE
 
 protected:
-  jweak           mWeakRef;
+  jobject         mWeakRef;
   nsJavaXPTCStub* mXPTCStub;
 };