diff --git a/lib/h2h3.c b/lib/h2h3.c
index f6695d355d..341a3caa75 100644
--- a/lib/h2h3.c
+++ b/lib/h2h3.c
@@ -37,7 +37,7 @@
  * used in a HTTP/2 or HTTP/3 request.
  */
 
-#if defined(USE_NGHTTP2) || defined(USE_HTTP3)
+#if defined(USE_NGHTTP2) || defined(ENABLE_QUIC)
 
 /* Index where :authority header field will appear in request header
    field list. */