diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 63857d008b..8ae8992127 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -489,6 +489,7 @@ enum AVColorTransferCharacteristic{
     AVCOL_TRC_UNSPECIFIED = 2,
     AVCOL_TRC_GAMMA22     = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
     AVCOL_TRC_GAMMA28     = 5, ///< also ITU-R BT470BG
+    AVCOL_TRC_SMPTE240M   = 7,
     AVCOL_TRC_NB             , ///< Not part of ABI
 };