diff --git a/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb b/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb
index 794f224..eb58d54 100644
--- a/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb
+++ b/ProjectPage/OptionPanel/MachiningOptionPanel/OperationExpander/OperationExpanderViewModel.vb
@@ -349,6 +349,7 @@ Namespace EgtCAM5
       Private m_cmdReloadMachining As ICommand
 
       Sub New()
+         Me.IsExpanded = True
          Application.Msn.Register(Application.LOADOPERATIONLIST, Sub()
                                                                     LoadOperationList()
                                                                  End Sub)