diff --git a/Src/Asp.Net/PgSqlTest/Demo/Demo1_Queryable.cs b/Src/Asp.Net/PgSqlTest/Demo/Demo1_Queryable.cs
index e92f19eb8..27f308cfb 100644
--- a/Src/Asp.Net/PgSqlTest/Demo/Demo1_Queryable.cs
+++ b/Src/Asp.Net/PgSqlTest/Demo/Demo1_Queryable.cs
@@ -316,7 +316,7 @@ namespace OrmTest
             var query2 = db.Queryable<Order>().Where(it => it.Id == 1);
             var list7 = query2.Clone().Where(it => it.Name == "jack").ToList();//id=1 and name = jack
             var list8 = query2.Clone().Where(it => it.Name == "tom").ToList();//id=1 and name = tom
-
+            db.CodeFirst.InitTables<Tree>();
             //无限级高性能导航映射
             var treeRoot = db.Queryable<Tree>().Where(it => it.Id == 1).ToList();
             db.ThenMapper(treeRoot, item =>