diff --git a/product/ERP5Type/tests/ERP5TypeTestCase.py b/product/ERP5Type/tests/ERP5TypeTestCase.py
index 320f28dc0b6391db6ef3856154ae96873ceca751..e69efc20143dced5462e4240442189bbb5a891c8 100644
--- a/product/ERP5Type/tests/ERP5TypeTestCase.py
+++ b/product/ERP5Type/tests/ERP5TypeTestCase.py
@@ -245,7 +245,7 @@ class ERP5TypeTestCase(PortalTestCase):
         """
         return ()
 
-    def logMessage(self):
+    def logMessage(self, message):
         """
 	  Shortcut function to log a message
 	"""