diff --git a/tests/tests_vc10.vcxproj b/tests/tests_vc10.vcxproj
index db4e107b..3ce3184a 100644
--- a/tests/tests_vc10.vcxproj
+++ b/tests/tests_vc10.vcxproj
@@ -145,6 +145,7 @@
     <ClCompile Include="textureRenderStates.cpp" />
     <ClCompile Include="timer.cpp" />
     <ClCompile Include="transparentMaterials.cpp" />
+    <ClCompile Include="triangle3d.cpp" />
     <ClCompile Include="triangleSelector.cpp" />
     <ClCompile Include="vectorPositionDimension2d.cpp" />
     <ClCompile Include="videoDriver.cpp" />