diff --git a/bgpd/bgp_snmp.c b/bgpd/bgp_snmp.c
index 6e9beab..e5bcd03 100644
--- a/bgpd/bgp_snmp.c
+++ b/bgpd/bgp_snmp.c
@@ -627,7 +627,7 @@
   struct bgp_info *min;
   struct bgp_node *rn;
   union sockunion su;
-  int len;
+  unsigned int len;
   struct in_addr paddr;
 
 #define BGP_PATHATTR_ENTRY_OFFSET \