diff --git a/krebs/4lib/types.nix b/krebs/4lib/types.nix
index b3d2c8b70..c52afa246 100644
--- a/krebs/4lib/types.nix
+++ b/krebs/4lib/types.nix
@@ -19,7 +19,6 @@ types // rec {
       };
       nets = mkOption {
         type = attrsOf net;
-        apply = x: assert hasAttr "retiolum" x; x;
       };
 
       extraZones = mkOption {