diff --git a/tests/ui/range_plus_minus_one.rs b/tests/ui/range_plus_minus_one.rs
index 3cfed4125b3..7d034117547 100644
--- a/tests/ui/range_plus_minus_one.rs
+++ b/tests/ui/range_plus_minus_one.rs
@@ -7,6 +7,7 @@ fn f() -> usize {
 }
 
 #[warn(clippy::range_plus_one)]
+#[warn(clippy::range_minus_one)]
 fn main() {
     for _ in 0..2 {}
     for _ in 0..=2 {}