diff --git a/src/agenda_culturel/import_tasks/extractor.py b/src/agenda_culturel/import_tasks/extractor.py
index 9a00769..7befc54 100644
--- a/src/agenda_culturel/import_tasks/extractor.py
+++ b/src/agenda_culturel/import_tasks/extractor.py
@@ -27,7 +27,7 @@ class Extractor(ABC):
         else:
             return start_day
 
-    def guess_month(self, text):
+    def guess_month(text):
         mths = [
             "jan",
             "fe",
@@ -55,14 +55,14 @@ class Extractor(ABC):
         )
         if m:
             day = m.group(1)
-            month = self.guess_month(m.group(2))
+            month = Extractor.guess_month(m.group(2))
             year = m.group(3)
         else:
             # format Numero Mois Annee
             m = re.search("([0-9]+)[er]*[ ]*([a-zA-ZéÉûÛ:.]+)[ ]*([0-9]+)", text)
             if m:
                 day = m.group(1)
-                month = self.guess_month(m.group(2))
+                month = Extractor.guess_month(m.group(2))
                 year = m.group(3)
             else:
                 # format Numero Mois Annee