diff --git a/envoy/config/listener/v3/quic_config.proto b/envoy/config/listener/v3/quic_config.proto
index 9eadc05f..89dc34a0 100644
--- a/envoy/config/listener/v3/quic_config.proto
+++ b/envoy/config/listener/v3/quic_config.proto
@@ -30,11 +30,14 @@ message QuicProtocolOptions {
   core.v3.QuicProtocolOptions quic_protocol_options = 1;
 
   // Maximum number of milliseconds that connection will be alive when there is
-  // no network activity. 300000ms if not specified.
+  // no network activity.
+  //
+  // If it is less than 1ms, Envoy will use 1ms. 300000ms if not specified.
   google.protobuf.Duration idle_timeout = 2;
 
   // Connection timeout in milliseconds before the crypto handshake is finished.
-  // 20000ms if not specified.
+  //
+  // If it is less than 5000ms, Envoy will use 5000ms. 20000ms if not specified.
   google.protobuf.Duration crypto_handshake_timeout = 3;
 
   // Runtime flag that controls whether the listener is enabled or not. If not specified, defaults