diff --git a/include/quicly/cc.h b/include/quicly/cc.h
index a0d7bffb..fdf1ac61 100644
--- a/include/quicly/cc.h
+++ b/include/quicly/cc.h
@@ -38,7 +38,6 @@ extern "C" {
 
 #define QUICLY_MIN_CWND 2
 #define QUICLY_RENO_BETA 0.7
-#define QUICLY_PACER_MULTIPLIER 2
 
 /**
  * Holds pointers to concrete congestion control implementation functions.