diff --git a/sbin/dhclient/minires/Makefile b/sbin/dhclient/minires/Makefile
index 0b43590b4dec..32e72a30b76b 100644
--- a/sbin/dhclient/minires/Makefile
+++ b/sbin/dhclient/minires/Makefile
@@ -9,7 +9,7 @@ LIB=	res
 INTERNALLIB=		true
 INTERNALSTATICLIB=	true
 
-SRCS=	ns_date.c ns_name.c ns_parse.c ns_samedomain.c ns_sign.c ns_verify.c \
+SRCS=	ns_date.c ns_name.c ns_parse%FIXED.c ns_samedomain.c ns_sign.c ns_verify.c \
 	res_comp.c res_findzonecut.c res_init.c res_mkquery.c res_mkupdate.c \
 	res_query.c res_send.c res_sendsigned.c res_update.c
 
@@ -17,4 +17,9 @@ CFLAGS+= -DHMAC_MD5 -DMINIRES_LIB
 
 NOMAN=	true
 
+CLEANFILES+=	ns_parse%FIXED.c
+ns_parse%FIXED.c: ns_parse.c
+	sed 's/struct _ns_flagdata _ns_flagdata/struct _ns_flagdata _ns_flagdata_DONT/'	\
+	    ${.ALLSRC} > ${.TARGET}
+
 .include <bsd.lib.mk>