diff --git a/nixos/modules/services/networking/mihomo.nix b/nixos/modules/services/networking/mihomo.nix
index a425952b54ce..05d3d304d460 100644
--- a/nixos/modules/services/networking/mihomo.nix
+++ b/nixos/modules/services/networking/mihomo.nix
@@ -18,7 +18,7 @@ in
     package = lib.mkPackageOption pkgs "mihomo" { };
 
     configFile = lib.mkOption {
-      type = lib.types.nullOr lib.types.path;
+      type = lib.types.path;
       description = "Configuration file to use.";
     };