Index: head/share/mk/bsd.snmpmod.mk
===================================================================
--- head/share/mk/bsd.snmpmod.mk	(revision 292229)
+++ head/share/mk/bsd.snmpmod.mk	(revision 292230)
@@ -1,27 +1,27 @@
 # $FreeBSD$
 
 INCSDIR=	${INCLUDEDIR}/bsnmp
 
 SHLIB_NAME=	snmp_${MOD}.so.${SHLIB_MAJOR}
 SRCS+=		${MOD}_oid.h ${MOD}_tree.c ${MOD}_tree.h
 CLEANFILES+=	${MOD}_oid.h ${MOD}_tree.c ${MOD}_tree.h
 CFLAGS+=	-I.
 
 ${MOD}_oid.h: ${MOD}_tree.def ${EXTRAMIBDEFS} ${EXTRAMIBSYMS}
 	cat ${.ALLSRC} | gensnmptree -e ${XSYM} > ${.TARGET}
 
 .ORDER: ${MOD}_tree.c ${MOD}_tree.h
 ${MOD}_tree.c ${MOD}_tree.h: ${MOD}_tree.def ${EXTRAMIBDEFS}
 	cat ${.ALLSRC} | gensnmptree -p ${MOD}_
 
 .if defined(DEFS)
 FILESGROUPS+=	DEFS
-DEFSDIR=	${SHAREDIR}/snmp/defs
+DEFSDIR?=	${SHAREDIR}/snmp/defs
 .endif
 
 .if defined(BMIBS)
 FILESGROUPS+=	BMIBS
-BMIBSDIR=	${SHAREDIR}/snmp/mibs
+BMIBSDIR?=	${SHAREDIR}/snmp/mibs
 .endif
 
 .include <bsd.lib.mk>