diff --git a/src/data/kmlparser.cpp b/src/data/kmlparser.cpp
index 7def0b69..f0813b0e 100644
--- a/src/data/kmlparser.cpp
+++ b/src/data/kmlparser.cpp
@@ -486,7 +486,7 @@ void KMLParser::multiTrack(TrackData &t)
 
 void KMLParser::multiGeometry(QList<TrackData> &tracks, QList<Area> &areas,
   QVector<Waypoint> &waypoints, const QString &name, const QString &desc,
-  const QDateTime timestamp)
+  const QDateTime &timestamp)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("Point")) {
diff --git a/src/data/kmlparser.h b/src/data/kmlparser.h
index 6b9ee039..331f3d6b 100644
--- a/src/data/kmlparser.h
+++ b/src/data/kmlparser.h
@@ -24,7 +24,7 @@ private:
 	  QVector<Waypoint> &waypoints);
 	void multiGeometry(QList<TrackData> &tracks, QList<Area> &areas,
 	  QVector<Waypoint> &waypoints, const QString &name, const QString &desc,
-	  const QDateTime timestamp);
+	  const QDateTime &timestamp);
 	void track(SegmentData &segment);
 	void multiTrack(TrackData &t);
 	void lineString(SegmentData &segment);