Amend macro to run through all sheets except two

Hi everyone,

I have found and adapted a macro (below) that searches all worksheets for a specific value (entered by the user in a specfic cell) then displays a list of hyperlinks to the matching cell locations.

I now have a couple of sheets I don't want to be included in this macro ("Master List" and "Pivot Table") but I'm really struggling to find a way of amending the macro to exclude these. I've searched and tried a couple of ways but I get errors and I think I'm not knowledgable enough to know where to put each bit of code.

Any help gratefully accepted

Private Sub Search_Click()
' finds and displays list of locations for strain entered in Search!D10, hyperlinks to drawer map
Range("C24:C500").Select
    Selection.Clear
Dim findvar As String
Dim sht
Dim cl
Dim outputvar As Long
findvar = Sheets("SEARCH").Range("D10").Value
outputvar = 0
For Each sht In ActiveWorkbook.Sheets
   If sht.Name <> ActiveSheet.Name Then
       For Each cl In sht.UsedRange
           If InStr(cl.Value, findvar) <> 0 Then
               Sheets("SEARCH").Range("C24").Offset(outputvar, 0).Formula = _
                       "=HYPERLINK(""#'" & cl.Parent.Name & "'!" & cl.Address & """,""" & cl.Parent.Name & " - " & cl.Value & """)"
               outputvar = outputvar + 1
           End If
       Next
   End If
Next
Range("D10").Select
End Sub