diff --git a/src/qxmpp-exts/QXmppHttpUploadIq.h b/src/qxmpp-exts/QXmppHttpUploadIq.h
index 19de3f9..c63d069 100644
--- a/src/qxmpp-exts/QXmppHttpUploadIq.h
+++ b/src/qxmpp-exts/QXmppHttpUploadIq.h
@@ -1,113 +1,113 @@
 /*
  *  Kaidan - A user-friendly XMPP client for every device!
  *
  *  Copyright (C) 2016-2019 Kaidan developers and contributors
  *  (see the LICENSE file for a full list of copyright authors)
  *
  *  Kaidan 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 3 of the License, or
  *  (at your option) any later version.
  *
  *  In addition, as a special exception, the author of Kaidan gives
  *  permission to link the code of its release with the OpenSSL
  *  project's "OpenSSL" library (or with modified versions of it that
  *  use the same license as the "OpenSSL" library), and distribute the
  *  linked executables. You must obey the GNU General Public License in
  *  all respects for all of the code used other than "OpenSSL". If you
  *  modify this file, you may extend this exception to your version of
  *  the file, but you are not obligated to do so.  If you do not wish to
  *  do so, delete this exception statement from your version.
  *
  *  Kaidan 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 Kaidan.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef QXMPPHTTPUPLOADIQ_H
 #define QXMPPHTTPUPLOADIQ_H
 
 #include <QMap>
 #include <QMimeType>
 #include <QUrl>
 
 #include <QXmppIq.h>
 
 const QString ns_httpupload = "urn:xmpp:http:upload:0";
 
 /// \brief Represents a request to the server for receiving an upload slot.
 ///
 /// XEP-Version: 0.7
 ///
 /// \ingroup Stanzas
 
 class QXMPP_EXPORT QXmppHttpUploadRequestIq : public QXmppIq
 {
 public:
     QString fileName() const;
     void setFileName(const QString &filename);
 
     qint64 size() const;
     void setSize(const qint64 &size);
 
     QMimeType contentType() const;
     void setContentType(const QMimeType &type);
 
     /// \cond
     static bool isHttpUploadRequestIq(const QDomElement &element);
 
 protected:
-    void parseElementFromChild(const QDomElement &element);
-    void toXmlElementFromChild(QXmlStreamWriter *writer) const;
+    void parseElementFromChild(const QDomElement &element) override;
+    void toXmlElementFromChild(QXmlStreamWriter *writer) const override;
     /// \endcond
 
 private:
     QString m_fileName;
     qint64 m_size;
     QMimeType m_contentType;
 };
 
 bool operator==(const QXmppHttpUploadRequestIq &l, const QXmppHttpUploadRequestIq &r);
 
 /// \brief Represents a slot for uploading a file to using HTTP File Upload. The server will return
 /// it after receiving a valid \see QXmppHttpUploadRequestIq.
 ///
 /// XEP-Version: 0.7
 ///
 /// \ingroup Stanzas
 
 class QXMPP_EXPORT QXmppHttpUploadSlotIq : public QXmppIq
 {
 public:
     QUrl putUrl() const;
     void setPutUrl(const QUrl &putUrl);
 
     QUrl getUrl() const;
     void setGetUrl(const QUrl &getUrl);
 
     QMap<QString, QString> headerFields() const;
     void setHeaderFields(const QMap<QString, QString> &headerFields);
 
     bool hasHttpsUrls() const;
 
     /// \cond
     static bool isHttpUploadSlotIq(const QDomElement &element);
 
 protected:
-    void parseElementFromChild(const QDomElement &element);
-    void toXmlElementFromChild(QXmlStreamWriter *writer) const;
+    void parseElementFromChild(const QDomElement &element) override;
+    void toXmlElementFromChild(QXmlStreamWriter *writer) const override;
     /// \endcond
 
 private:
     QUrl m_putUrl;
     QUrl m_getUrl;
     QMap<QString, QString> m_headerFields;
 };
 
 bool operator==(const QXmppHttpUploadSlotIq &l, const QXmppHttpUploadSlotIq &r);
 
 #endif // QXMPPHTTPUPLOADIQ_H