--- a/Beremiz_service.py	Tue Oct 09 11:43:39 2018 +0300
+++ b/Beremiz_service.py	Tue Oct 09 11:56:45 2018 +0300
@@ -328,7 +328,7 @@
                 ip_addr = self.pyroserver.ip_addr
                 ip_addr = '' if ip_addr is None else ip_addr
                 dlg = ParamsEntryDialog(None, _("Enter the IP of the interface to bind"), defaultValue=ip_addr)
-                dlg.SetTests([(re.compile('\d{1,3}(?:\.\d{1,3}){3}$').match, _("IP is not valid!")),
+                dlg.SetTests([(re.compile(r'\d{1,3}(?:\.\d{1,3}){3}$').match, _("IP is not valid!")),
                               (lambda x:len([x for x in x.split(".") if 0 <= int(x) <= 255]) == 4,
                                _("IP is not valid!"))])
                 if dlg.ShowModal() == wx.ID_OK: