diff --git a/custom_components/localtuya/pytuya/__init__.py b/custom_components/localtuya/pytuya/__init__.py
index d05a27f..a6870cd 100644
--- a/custom_components/localtuya/pytuya/__init__.py
+++ b/custom_components/localtuya/pytuya/__init__.py
@@ -479,8 +479,11 @@ class MessageDispatcher(ContextualLogger):
         if msg.seqno in self.listeners:
             # self.debug("Dispatching sequence number %d", msg.seqno)
             sem = self.listeners[msg.seqno]
-            self.listeners[msg.seqno] = msg
-            sem.release()
+            if isinstance(sem, asyncio.Semaphore):
+                self.listeners[msg.seqno] = msg
+                sem.release()
+            else:
+                self.debug("Got additional message without request - skipping: %s", sem)
         elif msg.cmd == HEART_BEAT:
             self.debug("Got heartbeat response")
             if self.HEARTBEAT_SEQNO in self.listeners: