diff --git a/tests/all.rs b/tests/all.rs
index 40a2f0e..bc2c64e 100644
--- a/tests/all.rs
+++ b/tests/all.rs
@@ -42,7 +42,7 @@ fn length_amount() {
 
 #[test]
 fn ascii() {
-	let (out, _) = exe!("-a", "1", "10");
+	let (out, _) = exe!("-c", "ascii", "--", "1", "10");
 	assert_eq!(out.len(), 10);
 	for line in &out {
 		assert_eq!(line.chars().count(), 1);