diff --git a/lib/Makefile b/lib/Makefile
index c9ef13f9b42b..cfa0ea9d2b70 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -308,4 +308,8 @@ _libusbhid=	libusbhid
 _libusb=	libusb
 .endif
 
+.if !make(install)
+SUBDIR_PARALLEL=
+.endif
+
 .include <bsd.subdir.mk>