diff --git a/visualc/VS2010/mbedTLS.vcxproj b/visualc/VS2010/mbedTLS.vcxproj
index 133fd065b..e33c7483c 100644
--- a/visualc/VS2010/mbedTLS.vcxproj
+++ b/visualc/VS2010/mbedTLS.vcxproj
@@ -281,6 +281,7 @@
     <ClCompile Include="..\..\library\platform.c" />
     <ClCompile Include="..\..\library\platform_util.c" />
     <ClCompile Include="..\..\library\poly1305.c" />
+    <ClCompile Include="..\..\library\psa_util.c" />
     <ClCompile Include="..\..\library\ripemd160.c" />
     <ClCompile Include="..\..\library\rsa.c" />
     <ClCompile Include="..\..\library\rsa_internal.c" />