Bonjour,
Essaie ce code
Sub Suppression_Cellules()
Dim WsS As Worksheet, WsC As Worksheet
Dim LigneC As Long
Dim PlageS As Range
Set WsS = Worksheets("Feuil2")
Set WsC = Worksheets("Feuil1")
Set PlageS = WsS.Range("A2", WsS.Range("A" & Rows.Count).End(xlUp))
For LigneC = WsC.Range("C" & Rows.Count).End(xlUp).Row To 5 Step -1
If Application.CountIf(PlageS, WsC.Range("C" & LigneC)) = 0 Then
WsC.Range("C" & LigneC).Delete xlShiftUp
End If
Next LigneC
End Sub
A+