diff --git a/index.d.ts b/index.d.ts
index 139712b..e00465c 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -61,7 +61,7 @@ interface EggMySQL {
     condition?: EggMySQLCondition
   ): Promise<EggMySQLGetResult>;
   /// get counts from table 
-  count: (table: string, values: object) => Promise<number>;
+  count: (table: string, where?: object) => Promise<number>;
   /// execute sql e.g.
   /// query('update posts set hits = (hits + ?) where id = ?', [1, postId])
   query: (