diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index df47f5bf465..a98f67d9ec2 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -653,6 +653,7 @@ _mpr=		mpr
 .endif
 
 .if ${MK_TESTS} != "no" || defined(ALL_MODULES)
+SUBDIR+=	ktest
 SUBDIR+=	tests
 .endif