Private Sub Worksheet_Change(ByVal Target As Range)

    Dim ȣ As Range
    
    On Error GoTo Err_Handler
    
    Set ȣ = Range("C3", Range("C3").End(xlDown).End(xlToRight))
    
    If Not Intersect(Target, ȣ) Is Nothing Then
        
        Application.EnableEvents = False
        
            Application.Undo
    
    End If
    
Err_Handler:
    
    Application.EnableEvents = True

End Sub