diff --git a/sbin/mount/Makefile b/sbin/mount/Makefile
index 407abea2f1f3..4cd26acd4176 100644
--- a/sbin/mount/Makefile
+++ b/sbin/mount/Makefile
@@ -3,7 +3,7 @@
 
 PROG=	mount
 SRCS=	mount.c mount_ufs.c getmntopts.c vfslist.c
-WARNS?=	0
+WARNS?=	3
 MAN=	mount.8
 # We do NOT install the getmntopts.3 man page.