diff --git a/nixos/modules/services/networking/ddclient.nix b/nixos/modules/services/networking/ddclient.nix
index 5050ecbd749..d1900deceaf 100644
--- a/nixos/modules/services/networking/ddclient.nix
+++ b/nixos/modules/services/networking/ddclient.nix
@@ -120,7 +120,7 @@ in
     };
 
     environment.etc."ddclient.conf" = {
-      enable = config.services.ddclient.configFile == /etc/ddclient.conf;
+      enable = config.services.ddclient.configFile == "/etc/ddclient.conf";
       uid = config.ids.uids.ddclient;
       mode = "0600";
       text = ''