diff --git a/libavformat/dv.h b/libavformat/dv.h
index ae16befd57..b8b43f1444 100644
--- a/libavformat/dv.h
+++ b/libavformat/dv.h
@@ -37,8 +37,5 @@ int dv_produce_packet(DVDemuxContext*, AVPacket*, uint8_t*, int);
 void dv_offset_reset(DVDemuxContext *c, int64_t frame_offset);
 
 typedef struct DVMuxContext DVMuxContext;
-DVMuxContext* dv_init_mux(AVFormatContext* s);
-int dv_assemble_frame(DVMuxContext *c, AVStream*, uint8_t*, int, uint8_t**);
-void dv_delete_mux(DVMuxContext*);
 
 #endif /* AVFORMAT_DV_H */
diff --git a/libavformat/dvenc.c b/libavformat/dvenc.c
index 0176ac9767..e48d8d09d4 100644
--- a/libavformat/dvenc.c
+++ b/libavformat/dvenc.c
@@ -232,8 +232,8 @@ static void dv_inject_metadata(DVMuxContext *c, uint8_t* frame)
  * The following 3 functions constitute our interface to the world
  */
 
-int dv_assemble_frame(DVMuxContext *c, AVStream* st,
-                      uint8_t* data, int data_size, uint8_t** frame)
+static int dv_assemble_frame(DVMuxContext *c, AVStream* st,
+                             uint8_t* data, int data_size, uint8_t** frame)
 {
     int i, reqasize;
 
@@ -285,7 +285,7 @@ int dv_assemble_frame(DVMuxContext *c, AVStream* st,
     return 0;
 }
 
-DVMuxContext* dv_init_mux(AVFormatContext* s)
+static DVMuxContext* dv_init_mux(AVFormatContext* s)
 {
     DVMuxContext *c = s->priv_data;
     AVStream *vst = NULL;
@@ -354,14 +354,13 @@ bail_out:
     return NULL;
 }
 
-void dv_delete_mux(DVMuxContext *c)
+static void dv_delete_mux(DVMuxContext *c)
 {
     int i;
     for (i=0; i < c->n_ast; i++)
         av_fifo_free(c->audio_data[i]);
 }
 
-#if CONFIG_DV_MUXER
 static int dv_write_header(AVFormatContext *s)
 {
     if (!dv_init_mux(s)) {
@@ -412,4 +411,3 @@ AVOutputFormat dv_muxer = {
     dv_write_packet,
     dv_write_trailer,
 };
-#endif /* CONFIG_DV_MUXER */