diff --git a/example/a2dp_source_demo.c b/example/a2dp_source_demo.c
index ce9d23d6c..a26da0d5e 100644
--- a/example/a2dp_source_demo.c
+++ b/example/a2dp_source_demo.c
@@ -900,7 +900,7 @@ static void stdin_process(char cmd){
     uint8_t status = ERROR_CODE_SUCCESS;
     switch (cmd){
         case 'b':
-            status = a2dp_source_establish_stream(device_addr, media_tracker.local_seid, &media_tracker.a2dp_cid);
+            status = a2dp_source_establish_stream(device_addr, &media_tracker.a2dp_cid);
             printf("%c - Create A2DP Source connection to addr %s, cid 0x%02x.\n", cmd, bd_addr_to_str(device_addr), media_tracker.a2dp_cid);
             break;
         case 'B':
diff --git a/src/classic/a2dp_source.c b/src/classic/a2dp_source.c
index 5d4806446..08ad7de05 100644
--- a/src/classic/a2dp_source.c
+++ b/src/classic/a2dp_source.c
@@ -699,7 +699,7 @@ void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpo
     avdtp_source_finalize_stream_endpoint(stream_endpoint);
 }
 
-uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint8_t loc_seid, uint16_t * avdtp_cid){
+uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) {
     if (outgoing_active || stream_endpoint_configured) {
         return ERROR_CODE_COMMAND_DISALLOWED;
     }
diff --git a/src/classic/a2dp_source.h b/src/classic/a2dp_source.h
index b67091ed8..56bc05369 100644
--- a/src/classic/a2dp_source.h
+++ b/src/classic/a2dp_source.h
@@ -114,11 +114,10 @@ void a2dp_source_register_packet_handler(btstack_packet_handler_t callback);
 
 /**
  * @brief Open stream.
- * @param remote
- * @param local_seid	 	ID assigned to a local stream endpoint
- * @param out_a2dp_cid 		Assigned A2DP channel identifyer used for furhter A2DP commands. 
+ * @param remote_addr
+ * @param avdtp_cid 		Assigned A2DP channel identifyer used for furhter A2DP commands.
  */
-uint8_t a2dp_source_establish_stream(bd_addr_t remote, uint8_t local_seid, uint16_t * out_a2dp_cid);
+uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid);
 
     /**
      * @brief Reconfigure stream.