diff --git a/src/backends/sage/sagebackend.cpp b/src/backends/sage/sagebackend.cpp
index 67613ec1..86000f5d 100644
--- a/src/backends/sage/sagebackend.cpp
+++ b/src/backends/sage/sagebackend.cpp
@@ -1,104 +1,109 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2009 Alexander Rieder <alexanderrieder@gmail.com>
  */
 
 #include "sagebackend.h"
 
 #include "sagesession.h"
 #include "settings.h"
 #include "ui_settings.h"
 #include "sageextensions.h"
 #include "sagehighlighter.h"
 
 #include <QDebug>
 #include <QWidget>
 
 #include "cantor_macros.h"
 
 
 SageBackend::SageBackend( QObject* parent,const QList<QVariant> args ) : Cantor::Backend( parent,args )
 {
     setObjectName(QLatin1String("sagebackend"));
     qDebug()<<"Creating SageBackend";
     //initialize the supported extensions
     new SageHistoryExtension(this);
     new SageScriptExtension(this);
     new SageCASExtension(this);
     new SageCalculusExtension(this);
     new SageLinearAlgebraExtension(this);
     new SagePlotExtension(this);
     new SagePackagingExtension(this);
 }
 
 SageBackend::~SageBackend()
 {
     qDebug()<<"Destroying SageBackend";
 }
 
 QString SageBackend::id() const
 {
     return QLatin1String("sage");
 }
 
+QString SageBackend::version() const
+{
+    return QLatin1String("Undefined");
+}
+
 Cantor::Session* SageBackend::createSession()
 {
     qDebug()<<"Spawning a new Sage session";
 
     return new SageSession(this);
 }
 
 Cantor::Backend::Capabilities SageBackend::capabilities() const
 {
     qDebug()<<"Requesting capabilities of SageSession";
     return Cantor::Backend::LaTexOutput|Cantor::Backend::SyntaxHighlighting|Cantor::Backend::Completion;
 }
 
 bool SageBackend::requirementsFullfilled() const
 {
     QFileInfo info(SageSettings::self()->path().toLocalFile());
     return info.isExecutable();
 }
 
 QWidget* SageBackend::settingsWidget(QWidget* parent) const
 {
     QWidget* widget=new QWidget(parent);
     Ui::SageSettingsBase s;
     s.setupUi(widget);
     return widget;
 }
 
 KConfigSkeleton* SageBackend::config() const
 {
     return SageSettings::self();
 }
 
 QUrl SageBackend::helpUrl() const
 {
     return QUrl(i18nc("the url to the documentation of Sage, please check if there is a translated version and use the correct url",
                  "http://www.sagemath.org/doc/reference/index.html"));
 }
 
 QString SageBackend::description() const
 {
     return i18n("Sage is a free open-source mathematics software system licensed under the GPL. <br/>" \
                 "It combines the power of many existing open-source packages into a common Python-based interface.");
 }
 
 K_PLUGIN_FACTORY_WITH_JSON(sagebackend, "sagebackend.json", registerPlugin<SageBackend>();)
 #include "sagebackend.moc"
diff --git a/src/backends/sage/sagebackend.h b/src/backends/sage/sagebackend.h
index 6b5a22f0..67565a6d 100644
--- a/src/backends/sage/sagebackend.h
+++ b/src/backends/sage/sagebackend.h
@@ -1,46 +1,47 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2009 Alexander Rieder <alexanderrieder@gmail.com>
  */
 
 #ifndef _SAGEBACKEND_H
 #define _SAGEBACKEND_H
 
 #include "backend.h"
 
 class SageBackend : public Cantor::Backend
 {
   Q_OBJECT
   public:
     explicit SageBackend( QObject* parent = 0,const QList<QVariant> args = QList<QVariant>());
     ~SageBackend();
 
     QString id() const;
+    QString version() const override;
     Cantor::Session *createSession();
     Cantor::Backend::Capabilities capabilities() const;
     virtual bool requirementsFullfilled() const;
 
     QWidget* settingsWidget(QWidget* parent) const;
     KConfigSkeleton* config() const;
 
     QUrl helpUrl() const;
     QString description() const;
 };
 
 
 #endif /* _SAGEBACKEND_H */