diff --git a/lib/libc/tests/locale/Makefile b/lib/libc/tests/locale/Makefile
index e4dc553c46a..d9be97c32b9 100644
--- a/lib/libc/tests/locale/Makefile
+++ b/lib/libc/tests/locale/Makefile
@@ -6,7 +6,7 @@ TESTSDIR=	${TESTSBASE}/lib/libc/locale
 
 NETBSD_ATF_TESTS_C=	io_test
 NETBSD_ATF_TESTS_C+=	mbrtowc_test
-NETBSD_ATF_TESTS_C+=	mbstowcs_test
+#NETBSD_ATF_TESTS_C+=	mbstowcs_test
 NETBSD_ATF_TESTS_C+=	mbsnrtowcs_test
 NETBSD_ATF_TESTS_C+=	mbtowc_test
 NETBSD_ATF_TESTS_C+=	wcscspn_test