diff --git a/SocketHttpListener/SocketHttpListener.csproj b/SocketHttpListener/SocketHttpListener.csproj
index 9fb7c50619..9cdc953c51 100644
--- a/SocketHttpListener/SocketHttpListener.csproj
+++ b/SocketHttpListener/SocketHttpListener.csproj
@@ -30,6 +30,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />