diff --git a/FreeSql/Extensions/DynamicEntityExtensions.cs b/FreeSql/Extensions/DynamicEntityExtensions.cs
index 83742fa53..7a675217c 100644
--- a/FreeSql/Extensions/DynamicEntityExtensions.cs
+++ b/FreeSql/Extensions/DynamicEntityExtensions.cs
@@ -1,6 +1,6 @@
 // by: Daily
 
-#if net40
+#if net40 || NETSTANDARD2_0
 #else
 
 using FreeSql;
diff --git a/FreeSql/FreeSql.csproj b/FreeSql/FreeSql.csproj
index 40f0b2e39..a19ed6c0b 100644
--- a/FreeSql/FreeSql.csproj
+++ b/FreeSql/FreeSql.csproj
@@ -73,10 +73,6 @@
 		<NoWarn>1701;1702;1591</NoWarn>
 	</PropertyGroup>
 
-	<ItemGroup Condition="'$(TargetFramework)' != 'net40'">
-		<PackageReference Include="System.Reflection.Emit" Version="4.3.0" />
-	</ItemGroup>
-
 	<PropertyGroup Condition="'$(TargetFramework)' == 'net40'">
 		<DefineConstants>net40</DefineConstants>
 	</PropertyGroup>