diff --git a/libavformat/avio.h b/libavformat/avio.h
index 74f4d55d0a..01ec9daf69 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -631,10 +631,10 @@ URLContext *url_fileno(AVIOContext *s);
 attribute_deprecated int url_fget_max_packet_size(AVIOContext *s);
 
 attribute_deprecated int url_open_buf(AVIOContext **s, uint8_t *buf, int buf_size, int flags);
-#endif
 
 /** return the written or read size */
-int url_close_buf(AVIOContext *s);
+attribute_deprecated int url_close_buf(AVIOContext *s);
+#endif
 
 /**
  * Open a write only memory stream.
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index b2683ca602..2bbcf940d9 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -1010,13 +1010,13 @@ int url_open_buf(AVIOContext **s, uint8_t *buf, int buf_size, int flags)
         av_freep(s);
     return ret;
 }
-#endif
 
 int url_close_buf(AVIOContext *s)
 {
     put_flush_packet(s);
     return s->buf_ptr - s->buffer;
 }
+#endif
 
 /* output in a dynamic buffer */