diff --git a/product/ERP5Type/tests/ProcessingNodeTestCase.py b/product/ERP5Type/tests/ProcessingNodeTestCase.py
index 8526f05558a11b6d7f21a7a51fc9ea8bd44db574..3bd0f54100b96387e6497d0defc0229bbefcfbdd 100644
--- a/product/ERP5Type/tests/ProcessingNodeTestCase.py
+++ b/product/ERP5Type/tests/ProcessingNodeTestCase.py
@@ -125,7 +125,7 @@ class ProcessingNodeTestCase(backportUnittest.TestCase, ZopeTestCase.TestCase):
         error_message += '\nLast error message:' \
                          '\n%(type)s\n%(value)s\n%(tb_text)s' \
                          % error_log[-1]
-      raise self.fail(error_message)
+      self.fail(error_message)
 
   def tic(self, verbose=0):
     """Execute pending activities"""