How to update a 2nd Worksheet from another Worksheet

[Spellbound]

Hi all

Earlier today RoyUK supplied me with this code for updating a worksheet when a cells content changes. This works fine but I now need to have a 2nd worksheet update itself when the cell in another worksheet changes.

Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Address <> "$B$2" Then Exit Sub
ActiveSheet.Calculate
End Sub

To clarify, I need Worksheet1 to update itself when cell B2 in worksheet2 changes.

TIA ...spellbound