diff --git a/src/webp/encode.h b/src/webp/encode.h
index 9291b719..b65e27e7 100644
--- a/src/webp/encode.h
+++ b/src/webp/encode.h
@@ -481,10 +481,10 @@ WEBP_EXTERN(int) WebPPictureARGBToYUVADithered(
 WEBP_EXTERN(int) WebPPictureSmartARGBToYUVA(WebPPicture* picture);
 
 // Converts picture->yuv to picture->argb and sets picture->use_argb to true.
-// The input format must be YUV_420 or YUV_420A.
-// Note that the use of this method is discouraged if one has access to the
-// raw ARGB samples, since using YUV420 is comparatively lossy. Also, the
-// conversion from YUV420 to ARGB incurs a small loss too.
+// The input format must be YUV_420 or YUV_420A. The conversion from YUV420 to
+// ARGB incurs a small loss too.
+// Note that the use of this colorspace is discouraged if one has access to the
+// raw ARGB samples, since using YUV420 is comparatively lossy.
 // Returns false in case of error.
 WEBP_EXTERN(int) WebPPictureYUVAToARGB(WebPPicture* picture);