diff --git a/eive_tmtc/tmtc/power/plpcdu.py b/eive_tmtc/tmtc/power/plpcdu.py
index cfe9dac..62517e3 100644
--- a/eive_tmtc/tmtc/power/plpcdu.py
+++ b/eive_tmtc/tmtc/power/plpcdu.py
@@ -86,6 +86,7 @@ class NormalSubmodesMask(enum.IntEnum):
 
 
 class SubmodeForNormalMode(enum.IntEnum):
+    NONE = 0
     SSR_ON = 1 << NormalSubmodesMask.SOLID_STATE_RELAYS_ADC_ON
     DRO_ON = 1 << NormalSubmodesMask.DRO_ON | (
         1 << NormalSubmodesMask.SOLID_STATE_RELAYS_ADC_ON