diff --git a/tests/by-util/test_ls.rs b/tests/by-util/test_ls.rs
index 33373960f..f8aa4453b 100644
--- a/tests/by-util/test_ls.rs
+++ b/tests/by-util/test_ls.rs
@@ -1143,7 +1143,7 @@ fn test_ls_indicator_style() {
     for opt in options {
         scene
             .ucmd()
-            .arg(format!("{}", opt))
+            .arg(opt.to_string())
             .succeeds()
             .stdout_contains(&"/");
     }