diff --git a/src/Dependencies/Microsoft.DiaSymReader/NetFX20/Microsoft.DiaSymReader.NetFX20.csproj b/src/Dependencies/Microsoft.DiaSymReader/NetFX20/Microsoft.DiaSymReader.NetFX20.csproj
index 9c5c3e4a7d7671e67a0b5cea15e2b0ccb8546451..50e2e885b448119c5906f3d906fa3e5707faf417 100644
--- a/src/Dependencies/Microsoft.DiaSymReader/NetFX20/Microsoft.DiaSymReader.NetFX20.csproj
+++ b/src/Dependencies/Microsoft.DiaSymReader/NetFX20/Microsoft.DiaSymReader.NetFX20.csproj
@@ -22,11 +22,6 @@
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'" />
-  <ItemGroup>
-    <Reference Include="..\..\..\..\packages\Microsoft.NetFX20.1.0.1-rc2\lib\net20\mscorlib.dll">
-      <Private>False</Private>
-    </Reference>
-  </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>