diff --git a/tangostationcontrol/tangostationcontrol/devices/recv.py b/tangostationcontrol/tangostationcontrol/devices/recv.py
index 3ebd84fe3f68b9945d26fd34b8d298dc4d4d5568..a8d83568c048272e670611966208e0e72adcd524 100644
--- a/tangostationcontrol/tangostationcontrol/devices/recv.py
+++ b/tangostationcontrol/tangostationcontrol/devices/recv.py
@@ -249,7 +249,7 @@ class RECV(opcua_device):
         """ Disable the RECV hardware. """
 
         # Save actual mask values
-        RCU_mask = self.RCU_mask_RW
+        RCU_mask = self.proxy.RCU_mask_RW
         # Set the mask to all Trues
         self.RCU_mask_RW = [True] * 32
         # Turn off the RCUs
diff --git a/tangostationcontrol/tangostationcontrol/devices/sdp/sdp.py b/tangostationcontrol/tangostationcontrol/devices/sdp/sdp.py
index d8c151751e2fd266b537aff90613085ace269897..9b8bd1458b79056cded5d2f3e7a37374437fad8c 100644
--- a/tangostationcontrol/tangostationcontrol/devices/sdp/sdp.py
+++ b/tangostationcontrol/tangostationcontrol/devices/sdp/sdp.py
@@ -286,13 +286,12 @@ class SDP(opcua_device):
     
     def _disable_hardware(self):
         """ Disable the SDP hardware. """
-        
         # Save actual mask values
-        TR_fpga_mask = self.TR_fpga_mask_RW
+        TR_fpga_mask = self.proxy.TR_fpga_mask_RW
         # Set the mask to all Trues
         self.TR_fpga_mask_RW = [True] * 16
         # Boot the boot image firmware
-        self.proxy.FPGA_boot_image_RW = [0] * self.N_pn
+        self.FPGA_boot_image_RW = [0] * self.N_pn
         # Restore the mask
         self.TR_fpga_mask_RW = TR_fpga_mask
 
diff --git a/tangostationcontrol/tangostationcontrol/devices/unb2.py b/tangostationcontrol/tangostationcontrol/devices/unb2.py
index f6f20c529e9df4d0e1a0f549b0169816e3ade03b..4e754df77e0d4b3749683b520f689cbeb9d0c971 100644
--- a/tangostationcontrol/tangostationcontrol/devices/unb2.py
+++ b/tangostationcontrol/tangostationcontrol/devices/unb2.py
@@ -211,7 +211,7 @@ class UNB2(opcua_device):
         """ Disable the UNB2 hardware. """
 
         # Save actual mask values
-        UNB2_mask = self.UNB2_mask_RW
+        UNB2_mask = self.proxy.UNB2_mask_RW
         # Set the mask to all Trues
         self.UNB2_mask_RW = [True] * 2
         # Turn off the uniboards