diff --git a/npm/ng-packs/packages/schematics/src/commands/change-theme/schema.json b/npm/ng-packs/packages/schematics/src/commands/change-theme/schema.json
index f38cc0037b..6eb6bc71a5 100644
--- a/npm/ng-packs/packages/schematics/src/commands/change-theme/schema.json
+++ b/npm/ng-packs/packages/schematics/src/commands/change-theme/schema.json
@@ -6,8 +6,11 @@
   "properties": {
     "name": {
       "description": "The name of theme will change.",
-      "type": "integer",
-      "default": 1,
+      "type": "number",
+      "$default": {
+        "$source": "argv",
+        "index": 0
+      },
       "enum": [1, 2, 3, 4],
       "x-prompt": {
         "message": "Which theme would you like to use?",
@@ -23,7 +26,11 @@
     "targetProject": {
       "description": "The name of the project will change the style.The project type must be 'application'",
       "type": "string",
-      "x-prompt": "Please enter the project name"
+      "x-prompt": "Please enter the project name",
+      "$default": {
+        "$source": "argv",
+        "index": 1
+      }
     }
   },
   "required": ["name"]