diff --git a/src/modules/module-rtp/stream.c b/src/modules/module-rtp/stream.c
index 36996ea90..749f07b23 100644
--- a/src/modules/module-rtp/stream.c
+++ b/src/modules/module-rtp/stream.c
@@ -550,6 +550,13 @@ uint16_t rtp_stream_get_seq(struct rtp_stream *s)
 	return impl->seq;
 }
 
+void rtp_stream_set_first(struct rtp_stream *s)
+{
+	struct impl *impl = (struct impl*)s;
+
+	impl->first = true;
+}
+
 int rtp_stream_set_param(struct rtp_stream *s, uint32_t id, const struct spa_pod *param)
 {
 	struct impl *impl = (struct impl*)s;
diff --git a/src/modules/module-rtp/stream.h b/src/modules/module-rtp/stream.h
index bfc126616..9be5c0d84 100644
--- a/src/modules/module-rtp/stream.h
+++ b/src/modules/module-rtp/stream.h
@@ -50,6 +50,8 @@ uint64_t rtp_stream_get_time(struct rtp_stream *s, uint64_t *rate);
 
 uint16_t rtp_stream_get_seq(struct rtp_stream *s);
 
+void rtp_stream_set_first(struct rtp_stream *s);
+
 int rtp_stream_set_param(struct rtp_stream *s, uint32_t id, const struct spa_pod *param);
 
 int rtp_stream_update_params(struct rtp_stream *stream,