diff --git a/openvpn-monitor.py b/openvpn-monitor.py
index 11bd80e..a0bbbf6 100755
--- a/openvpn-monitor.py
+++ b/openvpn-monitor.py
@@ -141,7 +141,7 @@ def load_default_settings(self):
                                     'show_disconnect': False}
 
     def parse_global_section(self, config):
-        global_vars = ['site', 'logo', 'latitude', 'longitude', 'maps', 'geoip_data', 'datetime_format']
+        global_vars = ['site', 'logo', 'latitude', 'longitude', 'maps', 'maps_height', 'geoip_data', 'datetime_format']
         for var in global_vars:
             try:
                 self.settings[var] = config.get('openvpn-monitor', var)