diff --git a/vhost_rs/src/vhost_user/mod.rs b/vhost_rs/src/vhost_user/mod.rs
index af2c6d166..a03204d8e 100644
--- a/vhost_rs/src/vhost_user/mod.rs
+++ b/vhost_rs/src/vhost_user/mod.rs
@@ -178,7 +178,7 @@ mod tests {
         backend: Arc<Mutex<S>>,
     ) -> (Master, SlaveReqHandler<S>) {
         let mut slave_listener = SlaveListener::new(path, true, backend).unwrap();
-        let master = Master::connect(path).unwrap();
+        let master = Master::connect(path, 1).unwrap();
         (master, slave_listener.accept().unwrap().unwrap())
     }