diff --git a/usr.sbin/sendmail/Makefile b/usr.sbin/sendmail/Makefile
index a9f7fbbafd69..1eaebeedfb44 100644
--- a/usr.sbin/sendmail/Makefile
+++ b/usr.sbin/sendmail/Makefile
@@ -45,6 +45,13 @@ CFLAGS+= -DNETINET6
 
 WARNS?=	1
 
+.if ${CC:T:Mclang} == "clang"
+# Unfortunately, clang gives warnings about sendmail code that cannot
+# be turned off yet.  Since this is contrib code, and we don't really
+# care about the warnings, just make them non-fatal for now.
+NO_WERROR=
+.endif
+
 DPADD=	${LIBUTIL} ${LIBWRAP}
 LDADD=	-lutil -lwrap