diff --git a/src/uu/tr/src/tr.rs b/src/uu/tr/src/tr.rs
index 153128bfd..eedf81d91 100644
--- a/src/uu/tr/src/tr.rs
+++ b/src/uu/tr/src/tr.rs
@@ -259,10 +259,10 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
     let squeeze_flag = matches.is_present(options::SQUEEZE);
     let truncate_flag = matches.is_present(options::TRUNCATE);
 
-    let sets = match matches.values_of(options::SETS) {
-        Some(v) => v.map(|v| v.to_string()).collect(),
-        None => vec![],
-    };
+    let sets = matches
+        .values_of(options::SETS)
+        .map(|v| v.map(ToString::to_string).collect::<Vec<_>>())
+        .unwrap_or_default();
 
     if sets.is_empty() {
         show_error!(