diff --git a/coopengo_modules/debug/debug.py b/coopengo_modules/debug/debug.py
index d357f64d09a..867cbb51145 100644
--- a/coopengo_modules/debug/debug.py
+++ b/coopengo_modules/debug/debug.py
@@ -5,6 +5,7 @@
 from collections import defaultdict
 import pprint
 import logging
+import unicodedata
 
 from trytond.wizard import Wizard, StateTransition, StateView, Button
 from trytond.config import config
@@ -282,14 +283,15 @@ def recalculate_field_infos(self):
         all_fields_infos = [
             info for info in all_fields_infos if info is not None]
         if self.name_filter:
-            name_filter = self.name_filter.replace('_', '').replace(
-                ' ', '').lower()
+            name_filter = self.name_filter.lower()
             all_fields_infos = [
                 info for info in all_fields_infos
                 if self.match_filter_name(name_filter, info)]
         self.field_infos = sorted(
             [x for x in all_fields_infos],
-            key=lambda x: getattr(x, self.filter_value))
+            key=lambda x: unicodedata.normalize('NFKD',
+                    getattr(x, self.filter_value)).encode('ascii',
+                        'ignore').decode('ascii'))
         if self.id_to_calculate:
             for field in self.field_infos:
                 try:
@@ -300,8 +302,8 @@ def recalculate_field_infos(self):
 
     @staticmethod
     def match_filter_name(name_filter, info):
-        return (name_filter in info.string.replace(' ', '').lower() or
-            name_filter in info.name.replace('_', ''))
+        return (name_filter in info.string.lower() or
+            name_filter in info.name)
 
     @classmethod
     def raw_field_info(cls, base_model, field_name):