diff --git a/Ubiety.Xmpp.Gcm/Ubiety.Xmpp.Gcm.csproj b/Ubiety.Xmpp.Gcm/Ubiety.Xmpp.Gcm.csproj
index a4b0df3..c76ddb7 100644
--- a/Ubiety.Xmpp.Gcm/Ubiety.Xmpp.Gcm.csproj
+++ b/Ubiety.Xmpp.Gcm/Ubiety.Xmpp.Gcm.csproj
@@ -40,7 +40,14 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Core\Gcm.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\ubiety\ubiety.csproj">
+      <Project>{fb8056a1-0547-4cef-ba68-0154462bc3db}</Project>
+      <Name>ubiety</Name>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>
\ No newline at end of file