diff --git a/src/bin/mdbook-last-changed.rs b/src/bin/mdbook-last-changed.rs
index 32cb04e..57237ee 100644
--- a/src/bin/mdbook-last-changed.rs
+++ b/src/bin/mdbook-last-changed.rs
@@ -49,7 +49,9 @@ fn handle_preprocessing() -> Result<(), Error> {
 }
 
 fn handle_supports(sub_args: &ArgMatches) -> ! {
-    let renderer = sub_args.get_one::<String>("renderer").expect("Required argument");
+    let renderer = sub_args
+        .get_one::<String>("renderer")
+        .expect("Required argument");
     let supported = LastChanged.supports_renderer(renderer);
 
     // Signal whether the renderer is supported by exiting with 1 or 0.