diff --git a/vhost_user_net/src/lib.rs b/vhost_user_net/src/lib.rs
index e2c9ad255..4430f7ab0 100644
--- a/vhost_user_net/src/lib.rs
+++ b/vhost_user_net/src/lib.rs
@@ -312,7 +312,9 @@ impl VhostUserBackend for VhostUserNetBackend {
                 }
             }
             1 => {
-                thread.process_tx(&mut vrings[1].write().unwrap().mut_queue())?;
+                let mut vring = vrings[1].write().unwrap();
+                thread.process_tx(vring.mut_queue())?;
+                vring.signal_used_queue()?;
             }
             2 => {
                 let mut vring = vrings[0].write().unwrap();
diff --git a/vm-virtio/src/net.rs b/vm-virtio/src/net.rs
index 6e67991d3..3b04ba5fb 100644
--- a/vm-virtio/src/net.rs
+++ b/vm-virtio/src/net.rs
@@ -148,8 +148,7 @@ impl NetEpollHandler {
         let mem = self.mem.memory();
 
         self.tx.process_desc_chain(&mem, &mut self.tap, &mut queue);
-
-        Ok(())
+        self.signal_used_queue(queue)
     }
 
     fn read_tap(&mut self) -> io::Result<usize> {