diff --git a/tests/by-util/test_numfmt.rs b/tests/by-util/test_numfmt.rs
index c7dea620c..0086c25e1 100644
--- a/tests/by-util/test_numfmt.rs
+++ b/tests/by-util/test_numfmt.rs
@@ -589,6 +589,7 @@ fn test_invalid_argument_returns_status_1() {
     new_ucmd!()
         .args(&["--header=hello"])
         .pipe_in("53478")
+        .ignore_stdin_write_error()
         .fails()
         .code_is(1);
 }