diff --git a/runtime/websocket/bin/funasr-wss-client-2pass.cpp b/runtime/websocket/bin/funasr-wss-client-2pass.cpp
index 0cbd10e23..6c3a4dd4f 100644
--- a/runtime/websocket/bin/funasr-wss-client-2pass.cpp
+++ b/runtime/websocket/bin/funasr-wss-client-2pass.cpp
@@ -449,6 +449,7 @@ class WebsocketClient {
         m_client.get_alog().write(websocketpp::log::alevel::app,
                                   "Send Error: " + ec.message());
       }
+      delete[] iArray;
       Pa_Sleep(20);  // sleep for 20ms
     }