diff --git a/USB-config-%26-command-protocol.md b/USB-config-%26-command-protocol.md
index 91c5c24..5d2cade 100644
--- a/USB-config-%26-command-protocol.md
+++ b/USB-config-%26-command-protocol.md
@@ -14,6 +14,7 @@ A response consists of a response status byte (`enum cfg_resp`), followed by a 7
 * Bad mode for this command: `0x02`
 * No such mode exists: `0x03`
 * Bad command argument: `0x04`
+* Wrong (mode-specific) state for this command: `0x05`
 
 ## General commands