diff --git a/lib/libpam/modules/Makefile b/lib/libpam/modules/Makefile
index cacf0115da7..ee1359bd3ac 100644
--- a/lib/libpam/modules/Makefile
+++ b/lib/libpam/modules/Makefile
@@ -27,5 +27,6 @@
 .include "modules.inc"
 
 SUBDIR=	${MODULES}
+SUBDIR_PARALLEL=
 
 .include <bsd.subdir.mk>