diff --git a/demos/streaming_tts_server/conf/tts_online_application.yaml b/demos/streaming_tts_server/conf/tts_online_application.yaml
index 04fb080b8..f5ec9dc8e 100644
--- a/demos/streaming_tts_server/conf/tts_online_application.yaml
+++ b/demos/streaming_tts_server/conf/tts_online_application.yaml
@@ -70,7 +70,6 @@ tts_online-onnx:
     phones_dict: 
     tones_dict: 
     speaker_dict: 
-    spk_id: 0
     am_sample_rate: 24000
     am_sess_conf:
         device: "cpu" # set 'gpu:id' or 'cpu'
diff --git a/demos/streaming_tts_server/conf/tts_online_ws_application.yaml b/demos/streaming_tts_server/conf/tts_online_ws_application.yaml
index a5abcde39..c65633917 100644
--- a/demos/streaming_tts_server/conf/tts_online_ws_application.yaml
+++ b/demos/streaming_tts_server/conf/tts_online_ws_application.yaml
@@ -70,7 +70,6 @@ tts_online-onnx:
     phones_dict: 
     tones_dict: 
     speaker_dict: 
-    spk_id: 0
     am_sample_rate: 24000
     am_sess_conf:
         device: "cpu" # set 'gpu:id' or 'cpu'