diff --git a/src/cloudforet/search/model/resource/response.py b/src/cloudforet/search/model/resource/response.py
index cdbb7d4..68f1238 100644
--- a/src/cloudforet/search/model/resource/response.py
+++ b/src/cloudforet/search/model/resource/response.py
@@ -6,7 +6,7 @@ class ResourceResponse(BaseModel):
     resource_id: Union[str, None] = None
     name: Union[str, None] = None
     description: Union[str, None] = None
-    tags: dict = {}
+    tags: Union[dict, None]
     domain_id: str
     workspace_id: Union[str, None] = None
     project_id: Union[str, None] = None
diff --git a/src/cloudforet/search/service/resource.py b/src/cloudforet/search/service/resource.py
index 894aa4f..b85fd12 100644
--- a/src/cloudforet/search/service/resource.py
+++ b/src/cloudforet/search/service/resource.py
@@ -148,6 +148,7 @@ def search(self, params: ResourceSearchRequest) -> Union[ResourcesResponse, dict
 
         response_conf = self.search_conf.get(resource_type).get("response")
         response = self._make_response(results, next_token, response_conf)
+        print(response)
 
         return ResourcesResponse(**response)
 
@@ -266,6 +267,8 @@ def _make_response(
                 result = self._convert_result_by_alias(result, aliases)
             if tags:
                 result = self._add_additional_info_to_tags(result, tags)
+            else:
+                result["tags"] = {}
 
             result["name"] = name_format.format(**result)
             result["resource_id"] = result[response_conf["resource_id"]]