Remove/Edit text from checkbox

How does one remove the text from check box. I just want the checkbox with black outline.
I have this.

Sub Test()
    Dim Rng As Range
    Dim c As Range
    Dim Ctrl As Object
    Set Rng = Range("A1:A10")
    For Each c In Rng
        Set Ctrl = ActiveSheet.CheckBoxes.Add(c.Left, c.Top, c.Width, c.Height)
        With Ctrl
            .LinkedCell = c.Offset(0, 1).Address
        End With
    Next c
End Sub