Fixes usage with ufw-frontends.
upstream bug report: https://bugs.launchpad.net/ufw/+bug/921758
--- src/util.py
+++ src/util.py
@@ -205,8 +205,9 @@
 
 def open_file_read(f):
     '''Opens the specified file read-only'''
+    import codecs
     try:
-        orig = open(f, 'r')
+        orig = codecs.open(f, 'r', "UTF-8")
     except Exception:
         raise