diff --git a/doc/muxers.texi b/doc/muxers.texi
index c5935c0923..b0366ae99d 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -3955,12 +3955,10 @@ Default value is 5000.
 Set the maximum size, in bytes, of RTP packets that send out.
 Default value is 1500.
 
-@item buffer_size, ts_buffer_size @var{integer}
+@item ts_buffer_size @var{integer}
 Set the buffer size, in bytes, of underlying protocol.
 Default value is -1(auto). The UDP auto selects a reasonable value.
 
-Using the buffer_size option name is deprecated and should not be used.
-
 @item authorization @var{string}
 The optional Bearer token for WHIP Authorization.
 
diff --git a/libavformat/whip.c b/libavformat/whip.c
index a45d9fe79f..fcac19d1c2 100644
--- a/libavformat/whip.c
+++ b/libavformat/whip.c
@@ -1899,11 +1899,9 @@ static int whip_check_bitstream(AVFormatContext *s, AVStream *st, const AVPacket
 
 #define OFFSET(x) offsetof(WHIPContext, x)
 #define ENC AV_OPT_FLAG_ENCODING_PARAM
-#define DEP AV_OPT_FLAG_DEPRECATED
 static const AVOption options[] = {
     { "handshake_timeout",  "Timeout in milliseconds for ICE and DTLS handshake.",      OFFSET(handshake_timeout),  AV_OPT_TYPE_INT,    { .i64 = 5000 },    -1, INT_MAX, ENC },
     { "pkt_size",           "The maximum size, in bytes, of RTP packets that send out", OFFSET(pkt_size),           AV_OPT_TYPE_INT,    { .i64 = 1200 },    -1, INT_MAX, ENC },
-    { "buffer_size",        "The buffer size, in bytes, of underlying protocol",        OFFSET(ts_buffer_size),        AV_OPT_TYPE_INT,    { .i64 = -1 },      -1, INT_MAX, ENC | DEP },
     { "ts_buffer_size",     "The buffer size, in bytes, of underlying protocol",        OFFSET(ts_buffer_size),        AV_OPT_TYPE_INT,    { .i64 = -1 },      -1, INT_MAX, ENC },
     { "authorization",      "The optional Bearer token for WHIP Authorization",         OFFSET(authorization),      AV_OPT_TYPE_STRING, { .str = NULL },     0,       0, ENC },
     { "cert_file",          "The optional certificate file path for DTLS",              OFFSET(cert_file),          AV_OPT_TYPE_STRING, { .str = NULL },     0,       0, ENC },