diff --git a/stimBuffApis/livoxGen1/ioUringAssemblyEngine.cpp b/stimBuffApis/livoxGen1/ioUringAssemblyEngine.cpp
index a4448f6..b32034c 100644
--- a/stimBuffApis/livoxGen1/ioUringAssemblyEngine.cpp
+++ b/stimBuffApis/livoxGen1/ioUringAssemblyEngine.cpp
@@ -587,17 +587,15 @@ void IoUringAssemblyEngine::onEventfdRead(
 		}
 	}
 
+	if (!isAssembling) { return; }
+
 	// Re-arm the eventfd read for next CQE notification
-	// Only re-arm if assembly is still active (stop() hasn't been called)
-	if (eventfdDesc && eventfdFd >= 0)
-	{
-		eventfdDesc->async_read_some(
-			boost::asio::buffer(&eventfd_value, sizeof(eventfd_value)),
-			std::bind(
-				&IoUringAssemblyEngine::onEventfdRead, this,
-				std::placeholders::_1,
-				std::placeholders::_2));
-	}
+	eventfdDesc->async_read_some(
+		boost::asio::buffer(&eventfd_value, sizeof(eventfd_value)),
+		std::bind(
+			&IoUringAssemblyEngine::onEventfdRead, this,
+			std::placeholders::_1,
+			std::placeholders::_2));
 }
 
 void IoUringAssemblyEngine::cancelIncompleteAndFillDummies()