diff --git a/PBot/AntiFlood.pm b/PBot/AntiFlood.pm
index 291e3908..caa54f2b 100644
--- a/PBot/AntiFlood.pm
+++ b/PBot/AntiFlood.pm
@@ -490,6 +490,8 @@ sub address_to_mask {
     $banmask = "*.$1";
   } elsif($address =~ m{^gateway/([^/]+)/([^/]+)/}) {
     $banmask = "gateway/$1/$2/*";
+  } elsif($address =~ m/^([^:]+):([^:]*):([^:]*):([^:]*):([^:]*):([^:]*):([^:]*):([^:]*)$/) {
+    $banmask = "$1:$2:*";
   } else {
     $banmask = $address;
   }