diff --git a/mozilla/xpfe/apprunner/public/nsIAppRunner.h b/mozilla/xpfe/apprunner/public/nsIAppRunner.h
index 8d5e0af0b1a..51905245f7f 100644
--- a/mozilla/xpfe/apprunner/public/nsIAppRunner.h
+++ b/mozilla/xpfe/apprunner/public/nsIAppRunner.h
@@ -33,6 +33,7 @@
 
 class nsIAppRunner : public nsISupports {
 public:
+  NS_DEFINE_STATIC_IID_ACCESSOR(NS_IAPPRUNNER_IID)
 
   NS_IMETHOD main( int argc, char *argv[] ) = 0;