diff --git a/evennia/commands/default/account.py b/evennia/commands/default/account.py
index f51b079e17..dd3878b080 100644
--- a/evennia/commands/default/account.py
+++ b/evennia/commands/default/account.py
@@ -665,6 +665,7 @@ class CmdOption(COMMAND_DEFAULT_CLASS):
             "INPUTDEBUG": validate_bool,
             "FORCEDENDLINE": validate_bool,
             "LOCALECHO": validate_bool,
+            "TRUECOLOR": validate_bool
         }
 
         name = self.lhs.upper()