diff --git a/doc/configuration.txt b/doc/configuration.txt
index 07ace7707..12606df38 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -15586,7 +15586,7 @@ proto <name>
   instance, it is possible to force the http/2 on clear TCP by specifying "proto
   h2" on the bind line.
 
-quic-cc-algo [ cubic | newreno ]
+quic-cc-algo { cubic | newreno }
   This is a QUIC specific setting to select the congestion control algorithm
   for any connection attempts to the configured QUIC listeners. They are similar
   to those used by TCP.