diff --git a/patacrep/authors.py b/patacrep/authors.py
index 11d1df60..dadcc909 100644
--- a/patacrep/authors.py
+++ b/patacrep/authors.py
@@ -16,11 +16,11 @@ def compile_authwords(authwords):
     return {
         'ignore': authwords.get('ignore', []),
         'after': [
-            re.compile(RE_AFTER.format(word), re.LOCALE)
+            re.compile(RE_AFTER.format(word))
             for word in authwords.get('after')
             ],
         'separators': [
-            re.compile(RE_SEPARATOR.format(word), re.LOCALE)
+            re.compile(RE_SEPARATOR.format(word))
             for word in ([" %s" % word for word in authwords['separators']] + [',', ';'])
             ],
         }
diff --git a/patacrep/index.py b/patacrep/index.py
index d572f872..e520e713 100644
--- a/patacrep/index.py
+++ b/patacrep/index.py
@@ -16,8 +16,8 @@ from patacrep.latex import tex2plain
 EOL = "\n"
 
 # Pattern set to ignore latex command in title prefix
-KEYWORD_PATTERN = re.compile(r"^%(\w+)\s?(.*)$", re.LOCALE)
-FIRST_LETTER_PATTERN = re.compile(r"^(?:\{?\\\w+\}?)*[^\w]*(\w)", re.LOCALE)
+KEYWORD_PATTERN = re.compile(r"^%(\w+)\s?(.*)$")
+FIRST_LETTER_PATTERN = re.compile(r"^(?:\{?\\\w+\}?)*[^\w]*(\w)")
 
 def process_sxd(filename):
     """Parse sxd file.
@@ -90,8 +90,7 @@ class Index:
             if 'prefix' in self.keywords:
                 for prefix in self.keywords['prefix']:
                     self.prefix_patterns.append(re.compile(
-                        r"^({prefix})(\b|\\)(\s*.*)$".format(prefix=prefix),
-                        re.LOCALE
+                        r"^({prefix})(\b|\\)(\s*.*)$".format(prefix=prefix)
                         ))
 
         if self.indextype == "AUTHOR":
diff --git a/patacrep/songs/__init__.py b/patacrep/songs/__init__.py
index b1d80f5d..c58aaae9 100644
--- a/patacrep/songs/__init__.py
+++ b/patacrep/songs/__init__.py
@@ -294,7 +294,7 @@ def unprefixed_title(title, prefixes):
     """Remove the first prefix of the list in the beginning of title (if any).
     """
     for prefix in prefixes:
-        match = re.compile(r"^(%s)\b\s*(.*)$" % prefix, re.LOCALE).match(title)
+        match = re.compile(r"^(%s)\b\s*(.*)$" % prefix).match(title)
         if match:
             return match.group(2)
     return title