diff --git a/weboob/capabilities/recipe.py b/weboob/capabilities/recipe.py
index ab325cfd..6e1ce1d5 100644
--- a/weboob/capabilities/recipe.py
+++ b/weboob/capabilities/recipe.py
@@ -70,7 +70,7 @@ class Recipe(CapBaseObject):
         if not empty(self.author):
             sauthor += '%s@' % self.author
 
-        if author == None:
+        if author is None:
             sauthor += 'Cookboob'
         else:
             sauthor += author