diff --git a/code/CMakeModules/PCHSupport.cmake b/code/CMakeModules/PCHSupport.cmake
index 0e33df4dc..042f6b0cc 100644
--- a/code/CMakeModules/PCHSupport.cmake
+++ b/code/CMakeModules/PCHSupport.cmake
@@ -34,7 +34,7 @@ ENDIF(MSVC)
 MACRO(PCH_SET_COMPILE_FLAGS _target)
   SET(PCH_FLAGS)
   SET(PCH_ARCHS) 
-  SET(FLAGS)
+  SET(_FLAGS)
   
   LIST(APPEND _FLAGS ${CMAKE_CXX_FLAGS})