diff --git a/nixos/modules/services/hardware/supergfxd.nix b/nixos/modules/services/hardware/supergfxd.nix
index cb604db91dc3..df339e4ba011 100644
--- a/nixos/modules/services/hardware/supergfxd.nix
+++ b/nixos/modules/services/hardware/supergfxd.nix
@@ -23,7 +23,10 @@ in
   config = lib.mkIf cfg.enable {
     environment.systemPackages = [ pkgs.supergfxctl ];
 
-    environment.etc."supergfxd.conf" = lib.mkIf (cfg.settings != null) { source = json.generate "supergfxd.conf" cfg.settings; };
+    environment.etc."supergfxd.conf" = lib.mkIf (cfg.settings != null) {
+      source = json.generate "supergfxd.conf" cfg.settings;
+      mode = "0644";
+    };
 
     services.dbus.enable = true;