diff --git a/sbin/ping/Makefile b/sbin/ping/Makefile
index 23bac6d62d9..ad5dce03363 100644
--- a/sbin/ping/Makefile
+++ b/sbin/ping/Makefile
@@ -34,6 +34,8 @@ CFLAGS+=-DWITH_CASPER
 CFLAGS+=-DIPSEC
 LIBADD+=	ipsec
 
+CFLAGS+=	-Wno-error=unused-but-set-variable
+
 HAS_TESTS=
 SUBDIR.${MK_TESTS}+= tests