diff --git a/backend/src/rate_limit.rs b/backend/src/rate_limit.rs
index 72d220a..94e30ea 100644
--- a/backend/src/rate_limit.rs
+++ b/backend/src/rate_limit.rs
@@ -218,7 +218,7 @@ mod tests {
         let limiter = FixedWindowLimiter::new(Duration::from_secs(60), 2);
         assert!(limiter.check("k").await.is_ok());
         assert!(limiter.check("k").await.is_ok());
-        let retry_after = limiter.check("k").await.err().expect("expected denial");
+        let retry_after = limiter.check("k").await.expect_err("expected denial");
         assert!(retry_after >= 1);
     }