diff --git a/product/ERP5/Tool/SimulationTool.py b/product/ERP5/Tool/SimulationTool.py
index 027233497c700acd00128e5707881c4bd50c5850..58985e4192b5adcb1e57359268d4ca5e0130875a 100644
--- a/product/ERP5/Tool/SimulationTool.py
+++ b/product/ERP5/Tool/SimulationTool.py
@@ -489,8 +489,7 @@ class SimulationTool(BaseTool):
         elif at_date :
           date_dict['query'].append(at_date)
           date_dict['range'] = 'ngt'
-        if len(date_dict['query']):
-          column_value_dict['date'] = date_dict
+        column_value_dict['date'] = date_dict
       else:
         column_value_dict['date'] = {'query': [to_date], 'range': 'ngt'}
         column_value_dict['mirror_date'] = {'query': [from_date], 'range': 'nlt'}