diff --git a/src/ArticleService/ArticleService.php b/src/ArticleService/ArticleService.php
index 3710891..41348c2 100644
--- a/src/ArticleService/ArticleService.php
+++ b/src/ArticleService/ArticleService.php
@@ -71,7 +71,7 @@ interface ArticleService
     public function deleteContentColumn(int $id): bool;
     public function getContentColumnList(array $params = []): array;
     public function getContentColumnDetail(int $id): array;
-    public function getContentColumnsByChannel(string $channel): array;
+    public function getContentColumnsByChannel(string $channel, string $platform = 'all'): array;
 
     // FAQ
     public function createFaq(array $data): int;