diff --git a/quic/api/QuicPacketScheduler.cpp b/quic/api/QuicPacketScheduler.cpp
index fd4098fb4..ac3306791 100644
--- a/quic/api/QuicPacketScheduler.cpp
+++ b/quic/api/QuicPacketScheduler.cpp
@@ -333,10 +333,6 @@ SchedulingResult FrameScheduler::scheduleFramesForPacket(
       none, std::move(builder).buildPacket(), shortHeaderPadding);
 }
 
-void FrameScheduler::writeNextAcks(PacketBuilderInterface& builder) {
-  ackScheduler_->writeNextAcks(builder);
-}
-
 bool FrameScheduler::hasData() const {
   return hasPendingAcks() || hasImmediateData();
 }
diff --git a/quic/api/QuicPacketScheduler.h b/quic/api/QuicPacketScheduler.h
index b18314ad5..56227c19a 100644
--- a/quic/api/QuicPacketScheduler.h
+++ b/quic/api/QuicPacketScheduler.h
@@ -320,9 +320,6 @@ class FrameScheduler : public QuicPacketScheduler {
 
   FOLLY_NODISCARD folly::StringPiece name() const override;
 
-  // Writes outstanding acks.
-  void writeNextAcks(PacketBuilderInterface& builder);
-
  private:
   Optional<StreamFrameScheduler> streamFrameScheduler_;
   Optional<AckScheduler> ackScheduler_;