diff --git a/client/keys/add.go b/client/keys/add.go
index 4480ad699..4591062e5 100644
--- a/client/keys/add.go
+++ b/client/keys/add.go
@@ -74,8 +74,8 @@ Example:
 	f.Bool(flags.FlagDryRun, false, "Perform action, but don't add key to local keystore")
 	f.String(flagHDPath, "", "Manual HD Path derivation (overrides BIP44 config)")
 	f.Uint32(flagCoinType, sdk.GetConfig().GetCoinType(), "coin type number for HD derivation")
-	f.Uint32(flagAccount, 0, "Account number for HD derivation")
-	f.Uint32(flagIndex, 0, "Address index number for HD derivation")
+	f.Uint32(flagAccount, 0, "Account number for HD derivation (less than equal 2147483647)")
+	f.Uint32(flagIndex, 0, "Address index number for HD derivation (less than equal 2147483647)")
 	f.String(flags.FlagKeyAlgorithm, string(hd.Secp256k1Type), "Key signing algorithm to generate keys for")
 
 	return cmd