diff --git a/krb5/Makefile.inc b/krb5/Makefile.inc
--- a/krb5/Makefile.inc
+++ b/krb5/Makefile.inc
@@ -22,7 +22,6 @@
 
 # There are no WARNS levels for this.
 CFLAGS+=	-Wno-deprecated-non-prototype \
-		-Wno-macro-redefined \
 		-Wno-unused-parameter
 
 WARNS?=		1