diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h
index 7acab9372e..c8743487c9 100644
--- a/libavutil/pixdesc.h
+++ b/libavutil/pixdesc.h
@@ -84,7 +84,7 @@ typedef struct AVPixFmtDescriptor{
     AVComponentDescriptor comp[4];
 }AVPixFmtDescriptor;
 
-#define PIX_FMT_BE        1 ///< big-endian
+#define PIX_FMT_BE        1 ///< Pixel format is big-endian.
 #define PIX_FMT_PAL       2 ///< Pixel format has a palette in data[1], values are indexes in this palette.
 #define PIX_FMT_BITSTREAM 4 ///< All values of a component are bit-wise packed end to end.
 #define PIX_FMT_HWACCEL   8 ///< Pixel format is an HW accelerated format.