diff --git a/dbaccess/source/ui/querydesign/QueryTableView.cxx b/dbaccess/source/ui/querydesign/QueryTableView.cxx
index f48dc17c7a3a..2ca8c71b837f 100644
--- a/dbaccess/source/ui/querydesign/QueryTableView.cxx
+++ b/dbaccess/source/ui/querydesign/QueryTableView.cxx
@@ -493,10 +493,10 @@ void OQueryTableView::AddTabWin(const OUString& _rComposedName, const OUString&
                         if ( pTabWinTmp == pNewTabWin )
                             continue;
 
+                        assert(pTabWinTmp && "TableWindow is null!");
                         if ( pTabWinTmp->GetData()->isQuery() )
                             continue;
 
-                        assert(pTabWinTmp && "TableWindow is null!");
                         Reference< XPropertySet > xFKKey = getKeyReferencedTo( pTabWinTmp->GetData()->getKeys(), pNewTabWin->GetComposedName() );
                         if ( !xFKKey.is() )
                             continue;