diff --git a/modules/commands.nix b/modules/commands.nix
index ae564c80..9ca743e2 100644
--- a/modules/commands.nix
+++ b/modules/commands.nix
@@ -16,8 +16,8 @@ let
       nargs =
         helpers.mkNullOrOption
           (types.enum [
-            "0"
-            "1"
+            0
+            1
             "*"
             "?"
             "+"
diff --git a/tests/test-sources/modules/commands.nix b/tests/test-sources/modules/commands.nix
index f65a5016..5597e12a 100644
--- a/tests/test-sources/modules/commands.nix
+++ b/tests/test-sources/modules/commands.nix
@@ -4,6 +4,7 @@
       "W" = {
         command = ":w<CR>";
         desc = "Write file";
+        nargs = 0;
       };
       "Z" = {
         command = ":echo fooo<CR>";