diff --git a/fw-addr-lists.rsc b/fw-addr-lists.rsc
index bffbf100..c93d36ea 100644
--- a/fw-addr-lists.rsc
+++ b/fw-addr-lists.rsc
@@ -141,7 +141,7 @@
             :if ([ :typeof $Slash ] = "num") do={
               :set Net [ :toip [ :pick $Address 0 $Slash ] ]
               :set Cidr [ :pick $Address ($Slash + 1) [ :len $Address ] ];
-              :set Address (([ :toip $Net ] & ($Maskv4->$Cidr)) . [ $IfThenElse ($Cidr < 32) ("/" . $Cidr) ]);
+              :set Address [ :tostr (([ :toip $Net ] & ($Maskv4->$Cidr)) . [ $IfThenElse ($Cidr < 32) ("/" . $Cidr) ]) ];
             }
             :set Branch [ $GetBranch $Address ];
             :set ($IPv4Addresses->$Branch->$Address) $TimeOut;