--- a/ui/administratorwindow.cpp	Tue Apr 15 16:46:13 2014 +0200
+++ b/ui/administratorwindow.cpp	Wed Apr 16 10:00:17 2014 +0200
@@ -15,6 +15,7 @@
 #include <QHeaderView>
 #include <QFileDialog>
 #include <QStandardPaths>
+#include <QSortFilterProxyModel>
 
 #include "certificatetabledelegate.h"
 #include "createinstallerdialog.h"
@@ -71,8 +72,10 @@
     QGroupBox *certBox = new QGroupBox(tr("Managed Certificates"));
     certificateView = new QTableView;
     certificateModel = new CertificateTabelModel();
+    QSortFilterProxyModel *filterModel = new QSortFilterProxyModel(this);
+    filterModel->setSourceModel(certificateModel);
     CertificateTableDelegate *delegate = new CertificateTableDelegate(certificateView);
-    certificateView->setModel(certificateModel);
+    certificateView->setModel(filterModel);
     certificateView->setItemDelegate(delegate);
     certificateView->resizeColumnsToContents();
     certificateView->setColumnWidth(0, 60);
@@ -80,6 +83,7 @@
     connect(certificateView, SIGNAL(clicked(const QModelIndex&)), this,
         SLOT(clickedCertificate(const QModelIndex&)));
     certificateView->verticalHeader()->setVisible(false);
+    certificateView->setSortingEnabled(true);
     certLayout->addWidget(certificateView);
     certBox->setLayout(certLayout);