diff --git a/ADO.md b/ADO.md
index a4bfee8..3f82cf5 100644
--- a/ADO.md
+++ b/ADO.md
@@ -7,7 +7,7 @@ Ado 是 IFreeSql 下重要的对象之一，它包括所有对 SQL 操作的封
 List<T> list = fsql.Ado.Query<T>("select * from t1");
 
 //返回单条记录
-T item = fsql.Ado.QuerySingle("select * from t1 where id = @id", new { id = 1 });
+T item = fsql.Ado.QuerySingle<T>("select * from t1 where id = @id", new { id = 1 });
 
 //返回多个结果集
 var result = fsql.Ado.Query<T1, T2>("select * from t1; select * from t2");