diff --git a/src/libs/ui/gantt/DateTimeTimeLine.h b/src/libs/ui/gantt/DateTimeTimeLine.h
index 87330c96..1e84ddf8 100644
--- a/src/libs/ui/gantt/DateTimeTimeLine.h
+++ b/src/libs/ui/gantt/DateTimeTimeLine.h
@@ -1,69 +1,69 @@
 /*
  * Copyright (C) 2019 Dag Andersen <danders@get2net.dk>
  *
  * This file is part of the KGantt library.
  *
  * 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, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef KPLATODATETIMETIMELINE_H
 #define KPLATODATETIMETIMELINE_H
 
 #include "kganttglobal.h"
 
 #include <QObject>
 
 class QDateTime;
 
 namespace KPlato {
 
 class DateTimeTimeLine : public QObject
 {
     Q_OBJECT
 public:
     enum Option {
         Foreground = 1,     /// Display the timeline in the foreground.
         Background = 2,     /// Display the timeline in the background.
         UseCustomPen = 4,   /// Paint the timeline using the pen set with setTimelinePen().
         MaxOptions = 0xFFFF
     };
     Q_DECLARE_FLAGS(Options, Option)
 
     DateTimeTimeLine();
 
     void setEnabled(bool enable);
     bool isEnabled() const;
     DateTimeTimeLine::Options options() const;
     void setOptions(DateTimeTimeLine::Options options);
     QDateTime dateTime() const;
     void setDateTime(const QDateTime &dt);
     void setInterval(int msec);
     int interval() const;
     QPen pen() const;
     void setPen(const QPen &pen);
 
 Q_SIGNALS:
     void updated();
 
 private:
     class Private;
     Private *d;
 };
 
-Q_DECLARE_OPERATORS_FOR_FLAGS(DateTimeTimeLine::Options)
-
 }
 
+Q_DECLARE_OPERATORS_FOR_FLAGS(KPlato::DateTimeTimeLine::Options)
+
 #endif /* KPLATODATETIMETIMELINE_H */