diff -r bc07b9910cdb -r d635680e4c2c etherlab/etherlab.py
--- a/etherlab/etherlab.py	Fri Sep 28 19:12:26 2018 +0300
+++ b/etherlab/etherlab.py	Fri Sep 28 19:16:12 2018 +0300
@@ -102,7 +102,7 @@
         factory = EntryListFactory(entries)
 
         entries_list_xslt_tree = etree.XSLT(
-            entries_list_xslt, extensions = {
+            entries_list_xslt, extensions={
                 ("entries_list_ns", "AddEntry"): factory.AddEntry,
                 ("entries_list_ns", "HexDecValue"): HexDecValue,
                 ("entries_list_ns", "EntryName"): EntryName})