diff --git a/libexec/smrsh/Makefile b/libexec/smrsh/Makefile
index ae86155d0d00..40eab7fa111c 100644
--- a/libexec/smrsh/Makefile
+++ b/libexec/smrsh/Makefile
@@ -17,6 +17,13 @@ LDADD=	${LIBSM}
 
 WARNS?=	2
 
+.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 turn make them non-fatal for now.
+NO_WERROR=
+.endif
+
 SRCS+=	sm_os.h
 CLEANFILES+=sm_os.h