diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index dea17ec0..27439839 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -157,7 +157,6 @@
     <Compile Include="Majiro\WidgetRCT.xaml.cs">
       <DependentUpon>WidgetRCT.xaml</DependentUpon>
     </Compile>
-    <Compile Include="ZLibStream.cs" />
     <Compile Include="Zyx\ArcBDF.cs" />
     <Compile Include="Zyx\ImageSPL.cs" />
     <None Include="ArcSeraph.cs" />
diff --git a/GameRes/GameRes.csproj b/GameRes/GameRes.csproj
index 5a3a12b3..6972bb8c 100644
--- a/GameRes/GameRes.csproj
+++ b/GameRes/GameRes.csproj
@@ -44,6 +44,7 @@
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.Composition" />
     <Reference Include="System.Core" />
+    <Reference Include="System.IO.Compression" />
     <Reference Include="System.Xaml" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
@@ -75,6 +76,7 @@
       <DependentUpon>garStrings.resx</DependentUpon>
     </Compile>
     <Compile Include="Utility.cs" />
+    <Compile Include="ZLibStream.cs" />
   </ItemGroup>
   <ItemGroup>
     <WCFMetadata Include="Service References\" />
diff --git a/ArcFormats/ZLibStream.cs b/GameRes/ZLibStream.cs
similarity index 100%
rename from ArcFormats/ZLibStream.cs
rename to GameRes/ZLibStream.cs