diff --git a/mozilla/extensions/java/xpcom/src/nsJavaXPTCStub.h b/mozilla/extensions/java/xpcom/src/nsJavaXPTCStub.h
index 9d1120e9244..5b4ba1b65af 100644
--- a/mozilla/extensions/java/xpcom/src/nsJavaXPTCStub.h
+++ b/mozilla/extensions/java/xpcom/src/nsJavaXPTCStub.h
@@ -55,7 +55,7 @@ public:
   NS_DECL_NSISUPPORTSWEAKREFERENCE
 
   nsJavaXPTCStub(JNIEnv* aJavaEnv, jobject aJavaObject,
-                 nsIInterfaceInfo *aIInfo, nsJavaXPTCStub* aMaster = nsnull);
+                 nsIInterfaceInfo *aIInfo);
 
   virtual ~nsJavaXPTCStub();