Dim SearchArea, findstr As Range
Dim firstaddress As String
Set SearchArea = ActiveSheet.UsedRange
Set findstr = SearchArea.Find(what:="部門")
If findstr Is Nothing Then Exit Sub
firstaddress = findstr.Address
Do
findstr.Value = "dell"
Set findstr = SearchArea.FindNext(after:=findstr)
Loop While findstr.Address <> firstaddress And Not findstr Is Nothing・・・ここでエラーが出ます。