diff --git a/drivers/wdm/audio/drivers/CMIDriver/CMakeLists.txt b/drivers/wdm/audio/drivers/CMIDriver/CMakeLists.txt
index 564c5e42212..eda3493b308 100644
--- a/drivers/wdm/audio/drivers/CMIDriver/CMakeLists.txt
+++ b/drivers/wdm/audio/drivers/CMIDriver/CMakeLists.txt
@@ -3,9 +3,10 @@ add_subdirectory(cmicontrol)
 add_subdirectory(cpl)
 
 
-# for WaveRT support
-remove_definitions(-D_WIN32_WINNT=0x502)
-add_definitions(-D_WIN32_WINNT=0x600)
+# For (NT6+) WaveRT support.
+# See WAVERT define in debug.hpp.
+# remove_definitions(-D_WIN32_WINNT=0x502)
+# add_definitions(-D_WIN32_WINNT=0x600)
 
 list(APPEND SOURCE
     adapter.cpp