diff --git a/reverse-zone.nix b/reverse-zone.nix
index 00a3dba..495c124 100644
--- a/reverse-zone.nix
+++ b/reverse-zone.nix
@@ -5,6 +5,8 @@
 
 with pkgs.lib;
 let
+  inherit (pkgs.lib.ip) networkMinIp neworkMaxButOneIp ipv4OnNetwork;
+
   range = base: top:
     assert base < top;
     let
@@ -12,8 +14,7 @@ let
         if base == top then [ ] else [ base ] ++ (rangeFun (base + 1) top);
     in rangeFun base top;
 
-  getNetworkHosts = network:
-    selectAttrs (ip: _: pkgs.lib.ip.ipv4OnNetwork ip network);
+  getNetworkHosts = network: selectAttrs (ip: _: ipv4OnNetwork ip network);
 
   getLastIpComponent = ip: head (reverseList (splitString "." ip));