diff --git a/lib/libbsnmp/libbsnmp/Makefile b/lib/libbsnmp/libbsnmp/Makefile
index a261847361e6..91351c0201e6 100644
--- a/lib/libbsnmp/libbsnmp/Makefile
+++ b/lib/libbsnmp/libbsnmp/Makefile
@@ -7,8 +7,10 @@ CONTRIB= ${.CURDIR}/../../../contrib/bsnmp/lib
 
 LIB	= bsnmp
 SHLIBDIR ?= /lib
+WARNS	?= 6
 
 CFLAGS+= -I${CONTRIB} -DHAVE_ERR_H -DHAVE_GETADDRINFO -DHAVE_STRLCPY
+CFLAGS+= -DHAVE_STDINT_H -DHAVE_INTTYPES_H -DQUADFMT='"llu"' -DQUADXFMT='"llx"'
 
 SRCS=	asn1.c snmp.c snmpagent.c snmpclient.c support.c
 INCS=	asn1.h snmp.h snmpagent.h snmpclient.h