diff --git a/eive_tmtc/tmtc/com/ccsds_handler.py b/eive_tmtc/tmtc/com/ccsds_handler.py
index 380e008..212d43e 100644
--- a/eive_tmtc/tmtc/com/ccsds_handler.py
+++ b/eive_tmtc/tmtc/com/ccsds_handler.py
@@ -45,9 +45,10 @@ class ActionId(enum.IntEnum):
 
 class Submode(enum.IntEnum):
     # Informative, do not command this.
-    OFF = 0
+    UNSET = 0
     DATARATE_LOW = 1
     DATARATE_HIGH = 2
+    DATARATE_DEFAULT = 3
 
 
 class OpCode: