diff --git a/product/ERP5Type/patches/WorkflowTool.py b/product/ERP5Type/patches/WorkflowTool.py
index a21eb0c54b7ea0f86f20d42b35bfa8a00deb0376..a3749e383456e39f1ff5a2d66c5f6ba2c83f29bb 100644
--- a/product/ERP5Type/patches/WorkflowTool.py
+++ b/product/ERP5Type/patches/WorkflowTool.py
@@ -482,7 +482,6 @@ def WorkflowTool_listActions(self, info=None, object=None, src__=False):
       select_expression_prefix = 'count(*) as %s' % (COUNT_COLUMN_TITLE, )
     getSecurityUidDictAndRoleColumnDict = \
       portal_catalog.getSecurityUidDictAndRoleColumnDict
-    security_query_cache_dict = {}
     def _getWorklistActionList():
       worklist_result_dict = {}
       sql_catalog = portal_catalog.getSQLCatalog()