diff --git a/visualc/VS2010/mbedTLS.vcxproj b/visualc/VS2010/mbedTLS.vcxproj
index 1d28df0..98b8d66 100644
--- a/visualc/VS2010/mbedTLS.vcxproj
+++ b/visualc/VS2010/mbedTLS.vcxproj
@@ -351,6 +351,7 @@
     <ClCompile Include="..\..\library\x509write_csr.c" />
     <ClCompile Include="..\..\library\xtea.c" />
     <ClCompile Include="..\..\tests\src\helpers.c" />
+    <ClCompile Include="..\..\tests\src\psa_crypto_helpers.c" />
     <ClCompile Include="..\..\tests\src\random.c" />
     <ClCompile Include="..\..\3rdparty\everest\library\everest.c" />
     <ClCompile Include="..\..\3rdparty\everest\library\Hacl_Curve25519_joined.c" />