diff --git a/librubyfmt/src/render_queue_writer.rs b/librubyfmt/src/render_queue_writer.rs
index 977d5151..bf256213 100644
--- a/librubyfmt/src/render_queue_writer.rs
+++ b/librubyfmt/src/render_queue_writer.rs
@@ -310,7 +310,7 @@ impl<'src> RenderQueueWriter<'src> {
 
         for line_token in tokens.into_iter() {
             let s = line_token.into_ruby();
-            write!(writer, "{}", s)?
+            writer.write_all(s.as_bytes())?;
         }
         Ok(())
     }
diff --git a/src/main.rs b/src/main.rs
index 45cd97cc..5b9f0774 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -330,7 +330,9 @@ fn iterate_formatted(opts: &CommandlineOpts, f: FormattingFunc) {
 }
 
 fn puts_stdout(input: &String) {
-    write!(io::stdout(), "{}", input).expect("Could not write to stdout");
+    io::stdout()
+        .write_all(input.as_bytes())
+        .expect("Could not write to stdout");
     io::stdout().flush().expect("flush works");
 }
 
@@ -386,7 +388,7 @@ fn main() {
                             .write(true)
                             .truncate(true)
                             .open(file_path)
-                            .and_then(|mut file| write!(file, "{}", fmtted));
+                            .and_then(|mut file| file.write_all(fmtted.as_bytes()));
 
                         match file_write {
                             Ok(_) => {}