diff --git a/SDL/mdm/usrCntlKartenDaten.vb b/SDL/mdm/usrCntlKartenDaten.vb
index ff41d48c..f0ff9e05 100644
--- a/SDL/mdm/usrCntlKartenDaten.vb
+++ b/SDL/mdm/usrCntlKartenDaten.vb
@@ -79,7 +79,7 @@ Public Class usrCntlKartenDaten
             kdNr_WHERE = ""
         End If
         If kdNr_filter Then
-            Dim dt As DataTable = SQL.loadDgvBySql("SELECT KundenSDL.SDLNr FROM KundenSDL INNER JOIN [Speditionsdienstleistungen] as S ON s.SDLNr=KundenSDL.sdlnr WHERE s.SDLTypNr IN (1,2) AND KundenSDL.KundenNr " & kdNr & "  group by KundenSDL.SDLNr ")
+            Dim dt As DataTable = SQL.loadDgvBySql("SELECT KundenSDL.SDLNr FROM KundenSDL INNER JOIN [Speditionsdienstleistungen] as S ON s.SDLNr=KundenSDL.sdlnr WHERE s.SDLTypNr IN (1,2) AND KundenSDL.KundenNr = '" & kdNr & "'  group by KundenSDL.SDLNr ")
             If dt Is Nothing Then
                 MsgBox("Es wurden noch keine Leistungen freigeschaltet.")
             Else