diff --git a/nixos/modules/i18n/input-method/default.nix b/nixos/modules/i18n/input-method/default.nix
index 7ed4a584d64..9548a249efa 100644
--- a/nixos/modules/i18n/input-method/default.nix
+++ b/nixos/modules/i18n/input-method/default.nix
@@ -50,7 +50,7 @@ in
 
       package = mkOption {
         internal = true;
-        type     = types.path;
+        type     = types.nullOr types.path;
         default  = null;
         description = ''
           The input method method package.