diff --git a/tests/split.rs b/tests/split.rs
index 429821e..9af030d 100644
--- a/tests/split.rs
+++ b/tests/split.rs
@@ -35,6 +35,7 @@ async fn test_split() {
         assert_eq!(output.next().await.unwrap(), "WINCH\r\n");
     }
 
+    pty.write_all(&[4u8]).await.unwrap();
     pty.write_all(&[4u8]).await.unwrap();
     child.wait().await.unwrap();
 }
@@ -102,6 +103,7 @@ async fn test_into_split() {
         pty = ptybuf.into_inner().unsplit(pty_w).unwrap();
     }
 
+    pty.write_all(&[4u8]).await.unwrap();
     pty.write_all(&[4u8]).await.unwrap();
     child.wait().await.unwrap();
 }