diff --git a/tangostationcontrol/tangostationcontrol/devices/unb2.py b/tangostationcontrol/tangostationcontrol/devices/unb2.py
index ba0c1364efe3af800ca0a3cf3ae7be313d1a38ac..b64b86b0e344d0b6642fb6364ff31ae983fbece9 100644
--- a/tangostationcontrol/tangostationcontrol/devices/unb2.py
+++ b/tangostationcontrol/tangostationcontrol/devices/unb2.py
@@ -63,12 +63,6 @@ class UNB2(opcua_device):
     N_DDR = 2
     N_QSFP = 6
 
-    UNB2_mask_RW_default = device_property(
-        dtype='DevVarBooleanArray',
-        mandatory=False,
-        default_value=[True] * 2
-    )
-
     TRANSLATOR_DEFAULT_SETTINGS = [
         'UNB2_mask_RW',
         'UNB2TR_monitor_rate_RW'