String Found In *deleted* Query/form

I've created a function to search for a string in SQL definitions:
Public Sub SearchInQueryDefs(strSearch As String)

Dim qdf As QueryDef
Dim qdfs As QueryDefs
Dim blnFound As Boolean

Set qdfs = CurrentDb.QueryDefs

For Each qdf In qdfs
blnFound = InStr(1, qdf.SQL, strSearch) > 0
If blnFound Then
Debug.Print "Searching : " & qdf.Name & "...";
Debug.Print " - found"
If vbNo = MsgBox("Found!" & vbCrLf & vbCrLf & "" & strSearch & " found in "

& qdf.Name & vbCrLf & vbCrLf & qdf.SQL & "" & vbCrLf & vbCrLf & "Click 'Yeah' to

continue search, 'Duh' to stop", vbExclamation + vbYesNo, "SearchInQueryDefs") Then
Exit Sub
End If
End If
Next qdf

MsgBox "Done searching.", vbInformation, GetAppTitle()
End Sub

Using the following statement (in the immediate window) i get the following result:
SearchInQueryDefs "Queries"
Searching : ~sq_cfrmReports~sq_clstQueries... - found
However query "~sq_cfrmReports~sq_clstQueries" doesn't exist.
It is probably a query which populates the listbox "lstQueries" in the "frmReports"

form. But that form doesn't exist in my database. I have deleted it some time ago. I

thought that Compact and Repair got rid of stuff like this.
I found the definition in the MsysObjects and with this Id also in the MsysQueries.
So my question is obvious: what is this, why is this and what can i do about it?

Thx!