diff --git a/raw_socket_listener/listener.go b/raw_socket_listener/listener.go
index 32a1cec..b81c23b 100644
--- a/raw_socket_listener/listener.go
+++ b/raw_socket_listener/listener.go
@@ -122,12 +122,6 @@ func (t *Listener) listen() {
 					t.dispatchMessage(message)
 				}
 			}
-
-			for key, alias := range t.respAliases {
-				if now.Sub(alias.start) >= t.messageExpire {
-					delete(t.respAliases, key)
-				}
-			}
 		}
 	}
 }