diff --git a/MapProjections/UWP/MapProjections.UWP.csproj b/MapProjections/UWP/MapProjections.UWP.csproj
index d09d81ed..4ae24b5b 100644
--- a/MapProjections/UWP/MapProjections.UWP.csproj
+++ b/MapProjections/UWP/MapProjections.UWP.csproj
@@ -61,6 +61,9 @@
     <Compile Include="..\Shared\Wgs84UtmProjection.cs">
       <Link>Wgs84UtmProjection.cs</Link>
     </Compile>
+    <Compile Include="..\Shared\WorldMercatorProjection.cs">
+      <Link>WorldMercatorProjection.cs</Link>
+    </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
     <EmbeddedResource Include="Properties\MapProjections.UWP.rd.xml" />
   </ItemGroup>