Sub Trouve()
With Sheets("materiel")
Application.ScreenUpdating = False
Set Plage = .Range("O1:O" & Range("B65500").End(xlUp).Row) ' Selection plage utile de "materiel"
' Colle formule
Plage.FormulaR1C1 = _
"=IFERROR(INDEX(site!C[-13],MATCH(VLOOKUP(RC[-13],TABLEAU!C[-14]:C[-13],2,FALSE),site!C[-12],0)),"""")"
Plage.Value = Plage.Value ' Copie colle valeurs
.[A1].Select
End With
End Sub