diff --git a/libavformat/rtp.h b/libavformat/rtp.h
index 834fb1b0d3..6a19225cac 100644
--- a/libavformat/rtp.h
+++ b/libavformat/rtp.h
@@ -23,8 +23,6 @@
 
 #include "libavcodec/avcodec.h"
 
-#define RTP_MAX_PACKET_LENGTH 1500 /* XXX: suppress this define */
-
 /** return < 0 if unknown payload type */
 int rtp_get_payload_type(AVCodecContext *codec);
 
diff --git a/libavformat/rtpdec.h b/libavformat/rtpdec.h
index 1eeb0ba968..72431f9602 100644
--- a/libavformat/rtpdec.h
+++ b/libavformat/rtpdec.h
@@ -57,6 +57,7 @@ typedef struct PayloadContext PayloadContext;
 typedef struct RTPDynamicProtocolHandler_s RTPDynamicProtocolHandler;
 
 #define RTP_MIN_PACKET_LENGTH 12
+#define RTP_MAX_PACKET_LENGTH 1500 /* XXX: suppress this define */
 
 int rtp_get_codec_info(AVCodecContext *codec, int payload_type);