diff --git a/src/conf_mode/interface-dummy.py b/src/conf_mode/interface-dummy.py
index 16b716e61..eb0145f65 100755
--- a/src/conf_mode/interface-dummy.py
+++ b/src/conf_mode/interface-dummy.py
@@ -1,114 +1,114 @@
 #!/usr/bin/env python3
 #
 # Copyright (C) 2019 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
 # published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
 
 from copy import deepcopy
 from sys import exit
 
 from vyos.ifconfig import DummyIf
 from vyos.configdict import list_diff
 from vyos.config import Config
 from vyos import ConfigError
 
 default_config_data = {
     'address': [],
     'address_remove': [],
     'deleted': False,
     'description': '',
     'disable': False,
     'intf': ''
 }
 
 def get_config():
     dummy = deepcopy(default_config_data)
     conf = Config()
 
     # determine tagNode instance
     try:
         dummy['intf'] = os.environ['VYOS_TAGNODE_VALUE']
     except KeyError as E:
         print("Interface not specified")
 
     # Check if interface has been removed
     if not conf.exists('interfaces dummy ' + dummy['intf']):
         dummy['deleted'] = True
         return dummy
 
     # set new configuration level
     conf.set_level('interfaces dummy ' + dummy['intf'])
 
     # retrieve configured interface addresses
     if conf.exists('address'):
         dummy['address'] = conf.return_values('address')
 
     # retrieve interface description
     if conf.exists('description'):
         dummy['description'] = conf.return_value('description')
 
     # Disable this interface
     if conf.exists('disable'):
         dummy['disable'] = True
 
     # Determine interface addresses (currently effective) - to determine which
     # address is no longer valid and needs to be removed from the interface
     eff_addr = conf.return_effective_values('address')
     act_addr = conf.return_values('address')
     dummy['address_remove'] = list_diff(eff_addr, act_addr)
 
     return dummy
 
 def verify(dummy):
     return None
 
 def generate(dummy):
     return None
 
 def apply(dummy):
     d = DummyIf(dummy['intf'])
 
     # Remove dummy interface
     if dummy['deleted']:
         d.remove()
     else:
         # update interface description used e.g. within SNMP
         d.set_alias(dummy['description'])
 
         # Configure interface address(es)
         # - not longer required addresses get removed first
         # - newly addresses will be added second
         for addr in dummy['address_remove']:
             d.del_addr(addr)
         for addr in dummy['address']:
             d.add_addr(addr)
 
         # disable interface on demand
         if dummy['disable']:
             d.set_state('down')
-        else
+        else:
             d.set_state('up')
 
     return None
 
 if __name__ == '__main__':
     try:
         c = get_config()
         verify(c)
         generate(c)
         apply(c)
     except ConfigError as e:
         print(e)
         exit(1)