diff --git a/src/bin/rustfmt.rs b/src/bin/rustfmt.rs
index ba00f123d03..4d2f1cdc041 100644
--- a/src/bin/rustfmt.rs
+++ b/src/bin/rustfmt.rs
@@ -79,7 +79,10 @@ impl CliOptions {
                 ));
             }
         } else {
-            println!("Warning: the default write-mode for Rustfmt will soon change to overwrite - this will not leave backups of changed files.");
+            println!(
+                "Warning: the default write-mode for Rustfmt will soon change to overwrite \
+                 - this will not leave backups of changed files."
+            );
         }
 
         if let Some(ref file_lines) = matches.opt_str("file-lines") {