diff --git a/src/tempus/Tempus.py b/src/tempus/Tempus.py
index 2f6f2d9218937801a602d78ce3e887d057d97dec..3c4754ab88f9a3f736622a22be4faf49ccbba135 100644
--- a/src/tempus/Tempus.py
+++ b/src/tempus/Tempus.py
@@ -360,12 +360,12 @@ class Tempus(Device):
     equalisationFile = String(
         displayedName="Equalisation npy File",
         defaultValue="B3_equalisation_HV100.npy",
-        allowedStates={State.INIT, State.ON})
+        allowedStates={State.INIT})
 
     maskFile = String(
         displayedName="Mask npy rFle",
         defaultValue="W15_pixel-mask_200V_20240612_late2.npy",
-        allowedStates={State.INIT, State.ON})
+        allowedStates={State.INIT})
 
     externalSync = Bool(
         displayedName="External Sync ('Pad')",