diff --git a/product/ERP5/Tool/SimulationTool.py b/product/ERP5/Tool/SimulationTool.py
index e454714c16f7121fc2a84f1415377ef91cf36553..85181004c7ba75a61cad56821793cd873aace20c 100644
--- a/product/ERP5/Tool/SimulationTool.py
+++ b/product/ERP5/Tool/SimulationTool.py
@@ -42,8 +42,6 @@ from Products.ERP5.Capacity.GLPK import solve
 from numpy import zeros, resize
 from DateTime import DateTime
 
-from Products.ERP5 import DeliverySolver
-from Products.ERP5 import TargetSolver
 from Products.PythonScripts.Utility import allow_class
 
 from Products.ZSQLCatalog.SQLCatalog import Query, ComplexQuery
diff --git a/product/ERP5/Tool/SolverTool.py b/product/ERP5/Tool/SolverTool.py
index d0a3085eccaf11ea888fdda880084d2441f38952..e311fd0d55af008c9062a6eed1d576096908d0e1 100644
--- a/product/ERP5/Tool/SolverTool.py
+++ b/product/ERP5/Tool/SolverTool.py
@@ -33,7 +33,6 @@ import re
 from AccessControl import ClassSecurityInfo
 from Products.ERP5Type import Permissions, interfaces
 from Products.ERP5Type.Tool.TypesTool import TypeProvider
-from Products.ERP5 import DeliverySolver
 from Products.ERP5Type.Message import translateString
 from Products.CMFCore.utils import getToolByName