diff --git a/custom_components/xiaomi_home/miot/miot_mips.py b/custom_components/xiaomi_home/miot/miot_mips.py
index 2187488f..962eaad6 100644
--- a/custom_components/xiaomi_home/miot/miot_mips.py
+++ b/custom_components/xiaomi_home/miot/miot_mips.py
@@ -1213,10 +1213,12 @@ def on_event_msg(topic: str, payload: str, ctx: Any):
                 or 'did' not in msg
                 or 'siid' not in msg
                 or 'eiid' not in msg
-                or 'arguments' not in msg
+                # or 'arguments' not in msg
             ):
                 # self.log_error(f'on_event_msg, recv unknown msg, {payload}')
                 return
+            if 'arguments' not in msg:
+                msg['arguments'] = []
             if handler:
                 self.log_debug('local, on event_occurred, %s', payload)
                 handler(msg, ctx)