if (info->bitmask & EBT_LOG_NFLOG)
                nf_log_packet(PF_BRIDGE, hooknr, skb, in, out, &li,
-                             info->prefix);
+                             "%s", info->prefix);
        else
                ebt_log_packet(PF_BRIDGE, hooknr, skb, in, out, &li,
                               info->prefix);
 
 
        if (loginfo->logflags & IPT_LOG_NFLOG)
                nf_log_packet(PF_INET, hooknum, *pskb, in, out, &li,
-                             loginfo->prefix);
+                             "%s", loginfo->prefix);
        else
                ipt_log_packet(PF_INET, hooknum, *pskb, in, out, &li,
                               loginfo->prefix);
 
 
        if (loginfo->logflags & IP6T_LOG_NFLOG)
                nf_log_packet(PF_INET6, hooknum, *pskb, in, out, &li,
-                             loginfo->prefix);
+                             "%s", loginfo->prefix);
        else
                ip6t_log_packet(PF_INET6, hooknum, *pskb, in, out, &li,
                                loginfo->prefix);