diff --git a/src/uu/nl/src/helper.rs b/src/uu/nl/src/helper.rs
index e617010c1..ee3f3a0a9 100644
--- a/src/uu/nl/src/helper.rs
+++ b/src/uu/nl/src/helper.rs
@@ -36,7 +36,7 @@ pub fn parse_options(settings: &mut crate::Settings, opts: &clap::ArgMatches) ->
     {
         None => {}
         Some(Ok(style)) => settings.header_numbering = style,
-        Some(Err(message)) => errs.push(message.to_string()),
+        Some(Err(message)) => errs.push(message),
     }
     match opts
         .get_one::<String>(options::BODY_NUMBERING)
@@ -45,7 +45,7 @@ pub fn parse_options(settings: &mut crate::Settings, opts: &clap::ArgMatches) ->
     {
         None => {}
         Some(Ok(style)) => settings.body_numbering = style,
-        Some(Err(message)) => errs.push(message.to_string()),
+        Some(Err(message)) => errs.push(message),
     }
     match opts
         .get_one::<String>(options::FOOTER_NUMBERING)
@@ -54,7 +54,7 @@ pub fn parse_options(settings: &mut crate::Settings, opts: &clap::ArgMatches) ->
     {
         None => {}
         Some(Ok(style)) => settings.footer_numbering = style,
-        Some(Err(message)) => errs.push(message.to_string()),
+        Some(Err(message)) => errs.push(message),
     }
     match opts.get_one::<usize>(options::NUMBER_WIDTH) {
         None => {}