diff --git a/Makefile b/Makefile
index 0cb21da6dd..3bd0c08f4b 100644
--- a/Makefile
+++ b/Makefile
@@ -725,6 +725,7 @@ ifeq ($(uname_S),SunOS)
 	NO_MEMMEM = YesPlease
 	NO_MKDTEMP = YesPlease
 	NO_MKSTEMPS = YesPlease
+	NO_REGEX = YesPlease
 	ifeq ($(uname_R),5.7)
 		NEEDS_RESOLV = YesPlease
 		NO_IPV6 = YesPlease