diff --git a/ldap/servers/snmp/ldap-agent.c b/ldap/servers/snmp/ldap-agent.c
index c77b4bd..b2b534f 100644
--- a/ldap/servers/snmp/ldap-agent.c
+++ b/ldap/servers/snmp/ldap-agent.c
@@ -32,8 +32,8 @@ oid    dsEntityTable_oid[] = {dsEntityTable_TABLE_OID };
 size_t dsEntityTable_oid_len = OID_LENGTH(dsEntityTable_oid);
 
 /* Set trap oids */
-oid    snmptrap_oid[] = { snmptrap_OID };
-size_t snmptrap_oid_len = OID_LENGTH(snmptrap_oid);
+const oid    snmptrap_oid[] = { snmptrap_OID };
+const size_t snmptrap_oid_len = OID_LENGTH(snmptrap_oid);
 oid    enterprise_oid[] = { enterprise_OID };
 size_t enterprise_oid_len = OID_LENGTH(enterprise_oid);
 
diff --git a/ldap/servers/snmp/ldap-agent.h b/ldap/servers/snmp/ldap-agent.h
index e3634aa..1f0e20c 100644
--- a/ldap/servers/snmp/ldap-agent.h
+++ b/ldap/servers/snmp/ldap-agent.h
@@ -123,8 +123,8 @@ typedef struct stats_table_context_s {
     extern size_t   dsEntriesTable_oid_len;
     extern oid      dsEntityTable_oid[];
     extern size_t   dsEntityTable_oid_len;
-    extern oid      snmptrap_oid[];
-    extern size_t   snmptrap_oid_len;
+    extern const oid      snmptrap_oid[];
+    extern const size_t   snmptrap_oid_len;
 
 #define enterprise_OID 1,3,6,1,4,1,2312
 #define dsOpsTable_TABLE_OID enterprise_OID,6,1