diff --git a/lightningd/ping.c b/lightningd/ping.c
index 3b7168a9b..c533e96b0 100644
--- a/lightningd/ping.c
+++ b/lightningd/ping.c
@@ -86,6 +86,6 @@ static void json_ping(struct command *cmd,
 static const struct json_command ping_command = {
 	"ping",
 	json_ping,
-	"Send {peerid} a ping of length {len} (default 128) asking for {pongbytes} (default 128)"
+	"Send peer {id} a ping of length {len} (default 128) asking for {pongbytes} (default 128)"
 };
 AUTODATA(json_command, &ping_command);