diff --git a/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2005.csproj b/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2005.csproj
index 88c6df4b..e7dbd7fc 100644
--- a/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2005.csproj
+++ b/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2005.csproj
@@ -870,6 +870,10 @@
     <EmbeddedResource Include="TestResource.txt" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Spring\Spring.Aop\Spring.Aop.2005.csproj">
+      <Project>{3A3A4E65-45A6-4B20-B460-0BEDC302C02C}</Project>
+      <Name>Spring.Aop.2005</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\src\Spring\Spring.Core\Spring.Core.2005.csproj">
       <Project>{710961A3-0DF4-49E4-A26E-F5B9C044AC84}</Project>
       <Name>Spring.Core.2005</Name>