diff --git a/nixos/modules/services/networking/networkmanager.nix b/nixos/modules/services/networking/networkmanager.nix
index f1ba7dd4e4f2..5edcaa45fcea 100644
--- a/nixos/modules/services/networking/networkmanager.nix
+++ b/nixos/modules/services/networking/networkmanager.nix
@@ -427,7 +427,7 @@ in {
       { source = "${networkmanager-iodine}/lib/NetworkManager/VPN/nm-iodine-service.name";
         target = "NetworkManager/VPN/nm-iodine-service.name";
       }
-    ] ++ optional (cfg.appendNameservers == [] || cfg.insertNameservers == [])
+    ] ++ optional (cfg.appendNameservers != [] || cfg.insertNameservers != [])
            { source = overrideNameserversScript;
              target = "NetworkManager/dispatcher.d/02overridedns";
            }