diff --git a/product/ERP5/tests/testInventoryModule.py b/product/ERP5/tests/testInventoryModule.py
index af8c150ab6078663f3cfacd7d80141a122781503..e303a5da3f21169b110c1c06e69c8ce1646914e5 100644
--- a/product/ERP5/tests/testInventoryModule.py
+++ b/product/ERP5/tests/testInventoryModule.py
@@ -67,9 +67,6 @@ class TestInventoryModule(TestOrderMixin, ERP5TypeTestCase):
   def getInventoryModule(self):
     return getattr(self.getPortal(), 'inventory_module',None)
 
-  def stepCommit(self,**kw):
-    get_transaction().commit()
-
   def stepCreateInitialMovements(self, sequence=None, **kw):
     """Create movements before this inventory.
     """