diff --git a/sys/conf/kern.opts.mk b/sys/conf/kern.opts.mk
index 1e661186c9d9..72420eebac19 100644
--- a/sys/conf/kern.opts.mk
+++ b/sys/conf/kern.opts.mk
@@ -41,6 +41,7 @@ __DEFAULT_YES_OPTIONS = \
     PF \
     SOURCELESS_HOST \
     SOURCELESS_UCODE \
+    TESTS \
     USB_GADGET_EXAMPLES \
     ZFS