diff --git a/config/packages/fos_elastica.yaml b/config/packages/fos_elastica.yaml
index 0e1e57e1..ed256532 100644
--- a/config/packages/fos_elastica.yaml
+++ b/config/packages/fos_elastica.yaml
@@ -69,12 +69,12 @@ fos_elastica:
                         normalizer:
                             keyword_normalizer:
                                 type: custom
-                                filter: [lowercase]
+                                filter: [lowercase, asciifolding]
                         analyzer:
                             my_analyzer:
                                 type: custom
                                 tokenizer: standard
-                                filter: [stop, lowercase, possessive_english_stemmer, 'english_stemmer']
+                                filter: [stop, lowercase, asciifolding, possessive_english_stemmer, 'english_stemmer']
                                 char_filter: [html_strip]
                         filter:
                             possessive_english_stemmer: