diff --git a/jbot/views.py b/jbot/views.py
index d5b1f35..ac4cc95 100644
--- a/jbot/views.py
+++ b/jbot/views.py
@@ -311,19 +311,20 @@ def _do_asr(audio_bytes: bytes, mime_type: str = 'audio/webm') -> str:
                 'end_window_size': 800,
             },
         }).encode()
-        ws.send_binary(_asr_pack(_ASR_MT_FULL_CLIENT, _FLAG_NO_SEQ,
-                                 _SER_JSON, _CMP_GZIP, gzip.compress(config)))
+        ws.send(_asr_pack(_ASR_MT_FULL_CLIENT, _FLAG_NO_SEQ,
+                                 _SER_JSON, _CMP_GZIP, gzip.compress(config)),
+                ws_module.ABNF.OPCODE_BINARY)
 
         CHUNK    = 6400
         pcm_data = pcm
         for off in range(0, len(pcm_data), CHUNK):
             chunk   = pcm_data[off:off + CHUNK]
             is_last = (off + CHUNK >= len(pcm_data))
-            ws.send_binary(_asr_pack(
+            ws.send(_asr_pack(
                 _ASR_MT_AUDIO_ONLY,
                 _FLAG_LAST_NO if is_last else _FLAG_NO_SEQ,
                 _SER_NONE, _CMP_GZIP, gzip.compress(chunk),
-            ))
+            ), ws_module.ABNF.OPCODE_BINARY)
 
     def on_message(ws, data):
         try: