diff --git a/eive_tmtc/tmtc/com/defs.py b/eive_tmtc/tmtc/com/defs.py
index f88df5e..57725b2 100644
--- a/eive_tmtc/tmtc/com/defs.py
+++ b/eive_tmtc/tmtc/com/defs.py
@@ -2,6 +2,7 @@ import enum
 
 
 class Mode(enum.IntEnum):
+    NONE = 0
     RX_ONLY = 10
     RX_AND_TX_DEF_DATARATE = 11
     RX_AND_TX_LOW_DATARATE = 12