diff --git a/rslib/src/scheduler/fsrs/simulator.rs b/rslib/src/scheduler/fsrs/simulator.rs
index 91c2bf7d0..9c6e1f60b 100644
--- a/rslib/src/scheduler/fsrs/simulator.rs
+++ b/rslib/src/scheduler/fsrs/simulator.rs
@@ -144,8 +144,11 @@ impl Collection {
             }
         }
         let days_elapsed = self.timing_today().unwrap().days_elapsed as i32;
-        let new_cards =
-            cards.iter().filter(|c| c.ctype == CardType::New && c.queue != CardQueue::Suspended).count() + req.deck_size as usize;
+        let new_cards = cards
+            .iter()
+            .filter(|c| c.ctype == CardType::New && c.queue != CardQueue::Suspended)
+            .count()
+            + req.deck_size as usize;
         let fsrs = FSRS::new(Some(&req.params))?;
         let mut converted_cards = cards
             .into_iter()