diff --git a/patacrep/authors.py b/patacrep/authors.py
index 769f2090..94e07f92 100644
--- a/patacrep/authors.py
+++ b/patacrep/authors.py
@@ -71,7 +71,7 @@ def split_sep_author(string, sep):
     - string: string containing authors names ;
     - sep: regexp matching a separator.
 
-    >>> split_sep_author("Tintin and Milou", '^(.*) and (.*)$')
+    >>> split_sep_author("Tintin and Milou", re.compile('^(.*) and (.*)$'))
     ["Tintin", "Milou"]
     """
     authors = []