diff --git a/muxers/mplex/tests/two_peers.rs b/muxers/mplex/tests/two_peers.rs
index b4d23f2eaf5..a45af23e74d 100644
--- a/muxers/mplex/tests/two_peers.rs
+++ b/muxers/mplex/tests/two_peers.rs
@@ -209,7 +209,7 @@ fn protocol_not_match() {
             .unwrap();
 
         let mut buf = vec![0u8; 11];
-        inbound.read_exact(&mut buf).await.unwrap();
+        outbound.read_exact(&mut buf).await.unwrap();
         assert_eq!(buf, b"hello world");
     });