diff --git a/mozilla/js2/src/regexp/regexp.h b/mozilla/js2/src/regexp/regexp.h
index 08a41c96f2c..630524ad400 100644
--- a/mozilla/js2/src/regexp/regexp.h
+++ b/mozilla/js2/src/regexp/regexp.h
@@ -104,5 +104,7 @@ bool parseFlags(JS2Metadata *meta, const jschar *flagStr, uint32 length, uint32
 // Execute the re against the string, but don't try advancing into the string
 REMatchResult *REMatch(JS2Metadata *meta, JS2RegExp *re, const jschar *str, uint32 length);
 
+void js_DestroyRegExp(JS2RegExp *re);
+
 }
 }