diff --git a/dom/public/idl/offline/Makefile.in b/dom/public/idl/offline/Makefile.in
index bcf0c550600..c7f3d084477 100644
--- a/dom/public/idl/offline/Makefile.in
+++ b/dom/public/idl/offline/Makefile.in
@@ -46,7 +46,7 @@ MODULE         = dom
 XPIDL_MODULE   = dom_offline
 GRE_MODULE     = 1
 
-SDK_XPIDLSRCS =                       \
+XPIDLSRCS =                           \
         nsIDOMOfflineResourceList.idl \
         nsIDOMLoadStatusList.idl      \
         nsIDOMLoadStatus.idl          \