Index: head/lib/libmp/tests/Makefile
===================================================================
--- head/lib/libmp/tests/Makefile	(revision 315035)
+++ head/lib/libmp/tests/Makefile	(revision 315036)
@@ -1,7 +1,8 @@
 # $FreeBSD$
 
 TAP_TESTS_C+=	legacy_test
 
+WARNS?=		3
 LIBADD+=	mp
 
 .include <bsd.test.mk>