diff --git a/third_party/lcms/include/lcms2.h b/third_party/lcms/include/lcms2.h
index f65b3b758..1ace75d35 100644
--- a/third_party/lcms/include/lcms2.h
+++ b/third_party/lcms/include/lcms2.h
@@ -62,7 +62,7 @@
 // #define CMS_RELY_ON_WINDOWS_STATIC_MUTEX_INIT
 
 // Uncomment this to remove the "register" storage class
-// #define CMS_NO_REGISTER_KEYWORD 1
+#define CMS_NO_REGISTER_KEYWORD 1
 
 // ********** End of configuration toggles ******************************