diff --git a/mozilla/content/html/document/src/nsHTMLDocument.h b/mozilla/content/html/document/src/nsHTMLDocument.h
index 2e8621bab66..ead28a18e21 100644
--- a/mozilla/content/html/document/src/nsHTMLDocument.h
+++ b/mozilla/content/html/document/src/nsHTMLDocument.h
@@ -208,7 +208,7 @@ protected:
 
   static nsresult GetSourceDocumentURL(JSContext* cx, nsIURI** sourceURL);
 
-  static void PR_CALLBACK DocumentWriteTerminationFunc(nsISupports *aRef);
+  static void DocumentWriteTerminationFunc(nsISupports *aRef);
 
   PRBool GetBodyContent();
   NS_IMETHOD GetBodyElement(nsIDOMHTMLBodyElement** aBody);