diff --git a/utils/deactivate_device.py b/utils/deactivate_device.py
index b67cd24..ef0dc04 100755
--- a/utils/deactivate_device.py
+++ b/utils/deactivate_device.py
@@ -1,58 +1,65 @@
 #!/usr/bin/env python3
 
 from phabricator import Phabricator
 import sys
 
 phab = Phabricator(host='https://c4science.ch/api/')
 phab.update_interfaces()
 
 # Disable write on device
-def deactivate_write(binding):
+def deactivate_write(action, binding):
+    if action == 'off':
+        transactions = [
+            {'type': 'property.set', 'value': {'writable': False}},
+        ]
+    else:
+        transactions = [
+            {'type': 'property.set', 'value': {'writable': True}},
+        ]
     print(phab.almanac.binding.edit(
         objectIdentifier = binding,
-	transactions = [
-            #{'type': 'property.set', 'value': {'writable': True}},
-            {'type': 'property.set', 'value': {'writable': False}},
-	],
+        transactions = transactions,
     ))
 
 # Get bindinds list
 def get_bindings(devices):
     device = phab.almanac.device.search(
         constraints = {
             'names': devices,
         }
     )
     if len(device.data) == 0:
         print('No device found')
         sys.exit(1)
     devices_phid = [a['phid'] for a in device.data]
 
     service = phab.almanac.service.search(
         constraints = {
             'names': ['repo-cluster', 'repo-single'],
         }
     )
     services_phid = [a['phid'] for a in service.data]
 
     bindings = phab.almanac.binding.search(
         constraints = {
             'servicePHIDs': services_phid,
             'devicePHIDs': devices_phid,
         },
     )
     if len(bindings.data) == 0:
         print('No binding found')
         sys.exit(1)
     return [a['phid'] for a in bindings.data]
 
 # MAIN
 
-devices = sys.argv[1:]
+action = sys.argv[1]
+devices = sys.argv[2:]
+
 if len(devices) == 0:
-    print('USAGE: {cmd} device...\nexample: {cmd} c4science-phd00 c4science-phd01'.format(cmd=sys.argv[0]))
+    print('USAGE: {cmd} [on|off] [device]...\nexample: {cmd} off c4science-phd00 c4science-phd01'.format(cmd=sys.argv[0]))
     sys.exit(1)
 
 bindings = get_bindings(devices)
 for binding in bindings:
-    deactivate_write(binding)
+    deactivate_write(action, binding)