diff --git a/etc/config-template.toml b/etc/config-template.toml
index 6b24544ed6f..5463a70e0b4 100644
--- a/etc/config-template.toml
+++ b/etc/config-template.toml
@@ -152,6 +152,9 @@
 ## Time to wait before closing the connection without receiving KeepAlive ping Ack.
 # grpc-keepalive-timeout = "3s"
 
+## Set maximum message length in bytes that gRPC can send. `-1` means unlimited.
+# max-grpc-send-msg-len = 10485760
+
 ## How many snapshots can be sent concurrently.
 # concurrent-send-snap-limit = 32