diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 5def718fc7..6b68afe93a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -187,17 +187,6 @@ struct AVCodecParameters;
  * @{
  */
 
-#if FF_API_BUFFER_MIN_SIZE
-/**
- * @ingroup lavc_encoding
- * minimum encoding buffer size
- * Used to avoid some checks during header writing.
- * @deprecated Unused: avcodec_receive_packet() does not work
- *             with preallocated packet buffers.
- */
-#define AV_INPUT_BUFFER_MIN_SIZE 16384
-#endif
-
 /**
  * @ingroup lavc_encoding
  */
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 38c12650c1..9a30ba5910 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -39,7 +39,6 @@
 
 #define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 62)
 
-#define FF_API_BUFFER_MIN_SIZE     (LIBAVCODEC_VERSION_MAJOR < 62)
 #define FF_API_VDPAU_ALLOC_GET_SET (LIBAVCODEC_VERSION_MAJOR < 62)
 #define FF_API_QUALITY_FACTOR      (LIBAVCODEC_VERSION_MAJOR < 62)
 #define FF_API_V408_CODECID        (LIBAVCODEC_VERSION_MAJOR < 62)