diff --git a/src/FFmpeg.h b/src/FFmpeg.h
index 46c317c00..96426940c 100644
--- a/src/FFmpeg.h
+++ b/src/FFmpeg.h
@@ -68,10 +68,6 @@ extern "C" {
    #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 59, 100)
    #define avcodec_free_frame av_free
    #endif
-
-   #ifndef PKT_FLAG_KEY
-   #define PKT_FLAG_KEY          AV_PKT_FLAG_KEY
-   #endif  
 }
 #endif