diff --git a/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs b/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs
index 0470c0f1..e77bb1b4 100644
--- a/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs
+++ b/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs
@@ -135,9 +135,35 @@ namespace FreeSql.Tests
             [Column(Name = "EDII_EDI_ID")] public long EdiId { get; set; }
         }
 
+        public class Song123
+        {
+            public long Id { get; set; }
+            protected Song123() { }
+            public Song123(long id) => Id = id;
+        }
+        public class Author123
+        {
+            public long Id { get; set; }
+            public long SongId { get; set; }
+            public Author123(long id, long songId)
+            {
+                Id = id;
+                SongId = songId;
+            }
+        }
+
         [Fact]
         public void Test03()
         {
+            g.sqlite.Delete<Song123>().Where("1=1").ExecuteAffrows();
+            g.sqlite.Delete<Author123>().Where("1=1").ExecuteAffrows();
+            g.sqlite.Insert(new Song123(1)).ExecuteAffrows();
+            g.sqlite.Insert(new Author123(11, 1)).ExecuteAffrows();
+            var song = g.sqlite.Select<Song123>()
+                .From<Author123>((a, b) => a.InnerJoin(a1 => a1.Id == b.SongId))
+                .First((a, b) => a); // throw error
+            Console.WriteLine(song == null);
+
             g.sqlite.Select<Edi>().ToList();
 
             var itemId2 = 2;
diff --git a/FreeSql/Extensions/FreeSqlGlobalExtensions.cs b/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
index c787b5eb..ae4c5929 100644
--- a/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
+++ b/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
@@ -130,7 +130,7 @@ public static partial class FreeSqlGlobalExtensions
         if (that == typeof(string)) return default(string);
         if (that.IsArray) return Array.CreateInstance(that, 0);
         var ctorParms = that.InternalGetTypeConstructor0OrFirst(false)?.GetParameters();
-        if (ctorParms == null || ctorParms.Any() == false) return Activator.CreateInstance(that, null);
+        if (ctorParms == null || ctorParms.Any() == false) return Activator.CreateInstance(that, true);
         return Activator.CreateInstance(that, ctorParms.Select(a => a.ParameterType.IsInterface || a.ParameterType.IsAbstract || a.ParameterType == typeof(string) ? null : Activator.CreateInstance(a.ParameterType, null)).ToArray());
     }
     internal static NewExpression InternalNewExpression(this Type that)
diff --git a/readme.md b/readme.md
index 8b8901fb..8a7fd57e 100644
--- a/readme.md
+++ b/readme.md
@@ -190,7 +190,7 @@ Elapsed: 00:00:00.6495301; Query Entity Counts: 131072; ORM: Dapper
 
 ## 💕 Donation
 
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+L*y 58元、花花 88元、麦兜很乖 50元、网络来者 2000元、John 99.99元、alex 666元、bacongao 36元、无名 100元、Eternity 188元、无名 10元、⌒.Helper~..oO 66元、习惯与被习惯 100元、无名 100元、蔡易喋 88.88元
 
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