diff --git a/indra/cmake/00-Common.cmake b/indra/cmake/00-Common.cmake
index 5eaca5c32..f422ed4ae 100644
--- a/indra/cmake/00-Common.cmake
+++ b/indra/cmake/00-Common.cmake
@@ -29,7 +29,7 @@ if (WINDOWS)
   # Don't build DLLs.
   set(BUILD_SHARED_LIBS OFF)
 
-  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Od /Zi /MDd /arch:SSE2"
+  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Od /Zi /MDd /MP /arch:SSE2"
       CACHE STRING "C++ compiler debug options" FORCE)
   set(CMAKE_CXX_FLAGS_RELWITHDEBINFO 
       "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /Od /Zi /MD /MP /arch:SSE2"