vba to count specific items in listbox

Hello,
Looking for help with a code to get the number of all items in a listbox where the 5th column is nothing:

Dim i As Long
Dim ListCount As Long

For i = 0 To (ListBox1.ListCount - 1)
    If ListBox1.List(ListBox1 - 1, 5) = "" Then ListCount = ListCount + 1 'not sure where to insert the "i"
Next

MsgBox ListCount

Thanks in advance.