diff --git a/apps/note/models/notes.py b/apps/note/models/notes.py
index fe7f1750..90d2e9af 100644
--- a/apps/note/models/notes.py
+++ b/apps/note/models/notes.py
@@ -247,7 +247,8 @@ class Alias(models.Model):
         Normalizes a string: removes most diacritics, does casefolding and ignore non-ASCII characters
         """
         return ''.join(
-            char for char in unicodedata.normalize('NFKD', string.casefold().replace('æ', 'ae').replace('œ', 'oe'))
+            char for char in unicodedata.normalize('NFKD', string.casefold().replace('æ', 'ae')
+                                                   .replace('œ', 'oe').replace('-', '_'))
             if all(not unicodedata.category(char).startswith(cat)
                    for cat in {'M', 'P', 'Z', 'C'})).casefold().encode('ascii', 'ignore').decode('ascii')