diff --git a/libavformat/audiointerleave.c b/libavformat/audiointerleave.c
index 056fbe1942..fac68d0bf3 100644
--- a/libavformat/audiointerleave.c
+++ b/libavformat/audiointerleave.c
@@ -67,7 +67,7 @@ int ff_audio_interleave_init(AVFormatContext *s,
     return 0;
 }
 
-int ff_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
+static int ff_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
                                    int stream_index, int flush)
 {
     AVStream *st = s->streams[stream_index];
diff --git a/libavformat/audiointerleave.h b/libavformat/audiointerleave.h
index d5b2957c00..9a228f8c5d 100644
--- a/libavformat/audiointerleave.h
+++ b/libavformat/audiointerleave.h
@@ -40,8 +40,6 @@ int ff_audio_interleave_init(AVFormatContext *s, const int *samples_per_frame, A
 void ff_audio_interleave_close(AVFormatContext *s);
 
 int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt);
-int ff_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
-                                   int stream_index, int flush);
 /**
  * Rechunk audio pcm packets per AudioInterleaveContext->samples_per_frame
  * and interleave them correctly.