diff --git a/syncthing_monitor/config_xml.py b/syncthing_monitor/config_xml.py
index 4ddbd6c..5987226 100644
--- a/syncthing_monitor/config_xml.py
+++ b/syncthing_monitor/config_xml.py
@@ -1,7 +1,9 @@
 from xml.etree import ElementTree as elementTree
 
+DEFAULT_CONFIG_XML_PATH = '/config/config.xml'
 
-def parse_api_key(xml_path='/config/config.xml'):
+
+def parse_api_key(xml_path=DEFAULT_CONFIG_XML_PATH):
     root = elementTree.parse(xml_path).getroot()
     api_key = ''
     for gui in root.findall('gui'):
@@ -10,11 +12,11 @@ def parse_api_key(xml_path='/config/config.xml'):
     return api_key
 
 
-def set_listen_ip_to_any(in_xml_path='/config/config.xml', out_xml_path='/config/config.xml', gui_port='8384'):
+def set_listen_ip_to_any(in_xml_path=DEFAULT_CONFIG_XML_PATH, out_xml_path=DEFAULT_CONFIG_XML_PATH, gui_port='8384'):
     with open(in_xml_path, 'r') as file:
         xml = file.read()
 
-    xml = xml.replace("127.0.0.1:8384", "0.0.0.0:"+gui_port)
+    xml = xml.replace("127.0.0.1:8384", "0.0.0.0:{0}".format(gui_port))
 
     with open(out_xml_path, 'w') as file:
         file.write(xml)