diff --git a/build/lemonldap-ng/Makefile b/build/lemonldap-ng/Makefile
index 7d6b93cc8..158e4c201 100644
--- a/build/lemonldap-ng/Makefile
+++ b/build/lemonldap-ng/Makefile
@@ -568,7 +568,7 @@ default-diff:
 	@$(DIFF) lemonldap-ng-portal/example/scripts/purgeCentralCache $(LMPREFIX)/bin/purgeCentralCache ||true
 	@$(DIFF) lemonldap-ng-portal/example/scripts/buildPortalWSDL $(LMPREFIX)/bin/buildPortalWSDL ||true
 	@$(DIFF) lemonldap-ng-portal/example/skins $(LMPREFIX)/htdocs/portal/skins ||true
-	@$(DIFF) -I '$$skin_dir' -I '$$appsxmlfile' lemonldap-ng-portal/example/index.pl $(LMPREFIX)/htdocs/portal/index.pl ||true
+	@$(DIFF) -I '$$skin_dir' -I '$$appsxmlfile' lemonldap-ng-portal/example/index_skin.pl $(LMPREFIX)/htdocs/portal/index.pl ||true
 	@$(DIFF) lemonldap-ng-portal/example/error.pl $(LMPREFIX)/htdocs/portal/error.pl ||true
 	@# Handler
 	@$(DIFF) lemonldap-ng-handler/lib/Lemonldap/NG/Handler /usr/local/share/perl/5.10.0/Lemonldap/NG/Handler ||true