diff --git a/src/swab.rs b/src/swab.rs
index 5b4c173..8573cea 100644
--- a/src/swab.rs
+++ b/src/swab.rs
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2024 DTB <trinity@trinity.moe>
+ * Copyright (c) 2024 Emma Tebibyte <emma@tebibyte.media>
  * SPDX-License-Identifier: AGPL-3.0-or-later
  *
  * This program is free software: you can redistribute it and/or modify it under
@@ -54,12 +55,10 @@ fn main() -> ExitCode {
 	while let Some(opt) = argv.getopt(":w:") {
 		match opt.opt() {
 			Ok("w") => {
-				if let Some(arg) = opt.arg() {
-					match arg.parse::<usize>() {
-						Ok(w) if w % 2 == 0 => { wordsize = w; () },
+					match opt.arg().unwrap().parse::<usize>() {
+						Ok(w) if w % 2 == 0 => { wordsize = w; },
 						_ => { return usage(&argv[0]); },
 					}
-				}
 				optind = opt.ind();
 			},
 			_ => { return usage(&argv[0]); }