diff --git a/neqo-transport/src/cc/classic_cc.rs b/neqo-transport/src/cc/classic_cc.rs
index 99b2dec290..9f6f9702d2 100644
--- a/neqo-transport/src/cc/classic_cc.rs
+++ b/neqo-transport/src/cc/classic_cc.rs
@@ -162,7 +162,7 @@ impl<T: WindowAdjustment> CongestionControl for ClassicCongestionControl<T> {
     }
 
     // Multi-packet version of OnPacketAckedCC
-    fn on_packets_acked(&mut self, acked_pkts: &[SentPacket], rtts: &RttEstimate, now: Instant) {
+    fn on_packets_acked(&mut self, acked_pkts: &[SentPacket], rtt_est: &RttEstimate, now: Instant) {
         let mut is_app_limited = true;
         let mut new_acked = 0;
         for pkt in acked_pkts {