| diff --git a/third_party/lcms/include/lcms2.h b/third_party/lcms/include/lcms2.h | 
 | index 739e6e1f8..c84a4fd93 100644 | 
 | --- a/third_party/lcms/include/lcms2.h | 
 | +++ b/third_party/lcms/include/lcms2.h | 
 | @@ -38,7 +38,7 @@ | 
 |  // #define CMS_DONT_USE_INT64        1 | 
 |   | 
 |  // Uncomment this if your compiler doesn't work with fast floor function | 
 | -// #define CMS_DONT_USE_FAST_FLOOR 1 | 
 | +#define CMS_DONT_USE_FAST_FLOOR 1 | 
 |   | 
 |  // Uncomment this line if you want lcms to use the black point tag in profile, | 
 |  // if commented, lcms will compute the black point by its own. |