diff --git a/visualc/VS2010/mbedTLS.vcxproj b/visualc/VS2010/mbedTLS.vcxproj
index d3bfaad..0456bc2 100644
--- a/visualc/VS2010/mbedTLS.vcxproj
+++ b/visualc/VS2010/mbedTLS.vcxproj
@@ -301,6 +301,7 @@
     <ClCompile Include="..\..\library\version_features.c" />
     <ClCompile Include="..\..\library\xtea.c" />
     <ClCompile Include="..\..\3rdparty\everest\library\everest.c" />
+    <ClCompile Include="..\..\3rdparty\everest\library\Hacl_Curve25519_joined.c" />
     <ClCompile Include="..\..\3rdparty\everest\library\x25519.c" />
     <ClCompile Include="..\..\3rdparty\everest\library\kremlib\FStar_UInt128_extracted.c" />
     <ClCompile Include="..\..\3rdparty\everest\library\kremlib\FStar_UInt64_FStar_UInt32_FStar_UInt16_FStar_UInt8.c" />