diff --git a/mozilla/xpfe/components/console/nsIScriptError.idl b/mozilla/xpfe/components/console/nsIScriptError.idl
index e6bc3f6de1f..c4fa75a9465 100644
--- a/mozilla/xpfe/components/console/nsIScriptError.idl
+++ b/mozilla/xpfe/components/console/nsIScriptError.idl
@@ -68,6 +68,8 @@ interface nsIScriptError : nsIConsoleMessage
 };
 
 %{ C++
+#define NS_SCRIPTERROR_CLASSNAME "Script Error"
+
 #define NS_SCRIPTERROR_CID \
 { 0xe38e53b9, 0x5bb0, 0x456a, { 0xb5, 0x53, 0x57, 0x93, 0x70, 0xcb, 0x15, 0x67 }}