diff --git a/Snowflake.Data/Core/Snowflake.cs b/Snowflake.Data/Core/Snowflake.cs
deleted file mode 100755
index 23164195a..000000000
--- a/Snowflake.Data/Core/Snowflake.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-/*
- * Copyright (c) 2012-2019 Snowflake Computing Inc. All rights reserved.
- */
-
-using System.Runtime.CompilerServices;
-[assembly: InternalsVisibleTo("Snowflake.Data.Tests")]
-[assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")] // needed by Moq to be able to mock internal interfaces
diff --git a/Snowflake.Data/Snowflake.Data.csproj b/Snowflake.Data/Snowflake.Data.csproj
index 3fc0f607c..f82793477 100644
--- a/Snowflake.Data/Snowflake.Data.csproj
+++ b/Snowflake.Data/Snowflake.Data.csproj
@@ -38,6 +38,12 @@
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="5.0.0" />
   </ItemGroup>
+
+  <ItemGroup Condition="'$(Configuration)' != 'Release'">
+    <InternalsVisibleTo Include="Snowflake.Data.Tests" />
+    <!--needed by Moq to be able to mock internal interfaces-->
+    <InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+  </ItemGroup>
   
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <DebugType>full</DebugType>