diff --git a/shell/public/nsIApplicationShell.h b/shell/public/nsIApplicationShell.h
index a1c6da2d77fc..8d5c2d5e4cba 100644
--- a/shell/public/nsIApplicationShell.h
+++ b/shell/public/nsIApplicationShell.h
@@ -46,6 +46,6 @@ public:
 
 };
 
-extern NS_WEB nsresult NS_NewApplicationShell(nsIApplicationShell** aInstancePtrResult);
+extern NS_SHELL nsresult NS_NewApplicationShell(nsIApplicationShell** aInstancePtrResult);
 
 #endif /* nsIApplicationShell_h___ */