diff --git a/src/cli/README.md b/src/cli/README.md
index e52206466..0eb40fb56 100644
--- a/src/cli/README.md
+++ b/src/cli/README.md
@@ -419,7 +419,7 @@ Print diagnostic information for an attached Thread Child. The `id` may be a Chi
 Child ID: 1
 Rloc: 9c01
 Ext Addr: e2b3540590b0fd87
-Mode: rsn
+Mode: rn
 Net Data: 184
 Timeout: 100
 Age: 0