diff --git a/Aaru.Helpers.csproj b/Aaru.Helpers.csproj
index 2fd832f..3a588cc 100644
--- a/Aaru.Helpers.csproj
+++ b/Aaru.Helpers.csproj
@@ -54,9 +54,6 @@
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
   </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="System" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="ArrayFill.cs" />
     <Compile Include="BigEndianBitConverter.cs" />