diff --git a/CMakeLists.txt b/CMakeLists.txt
index cafed217e9..a842d4f219 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1181,8 +1181,8 @@ IF(MSVC)
 		SET (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /EHa")
     ENDIF(FREECAD_RELEASE_SEH)
   
-  OPTION(MP_COMPILE_FLAG "Add /MP flag to the compiler definitions. Speeds up the compile on multi processor machines" OFF)
-  if( MP_COMPILE_FLAG )
+  OPTION(FREECAD_USE_MP_COMPILE_FLAG "Add /MP flag to the compiler definitions. Speeds up the compile on multi processor machines" OFF)
+  if(FREECAD_USE_MP_COMPILE_FLAG)
     # set "Build with Multiple Processes"
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")