diff --git a/src/models/lapmodel.cpp b/src/models/lapmodel.cpp
index ae5367f..4b329a3 100644
--- a/src/models/lapmodel.cpp
+++ b/src/models/lapmodel.cpp
@@ -1,184 +1,184 @@
 /*
     Copyright (C) 2014 by Elvis Angelaccio <elvis.angelaccio@kde.org>
 
     This file is part of Kronometer.
 
     Kronometer 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.
 
     Kronometer 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 Kronometer.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "lapmodel.h"
 
 #include <KLocalizedString>
 
 #include <QTime>
 
 LapModel::LapModel(QObject* parent) : QAbstractTableModel(parent)
 {}
 
 int LapModel::columnCount(const QModelIndex& parent) const
 {
     Q_UNUSED(parent)
 
     return m_roles.count();
 }
 
 int LapModel::rowCount(const QModelIndex& parent) const
 {
     Q_UNUSED(parent)
 
     return m_laps.size();
 }
 
 QVariant LapModel::data(const QModelIndex& index, int role) const
 {
     if (not index.isValid()) {
         return QVariant::Invalid;
     }
 
     if (index.row() >= rowCount() or index.row() < 0) {
         return QVariant::Invalid;
     }
 
     if (role == Qt::DisplayRole) {
         return data(index, Qt::UserRole + index.column());
     }
 
     switch (static_cast<Roles>(role)) {
     case Roles::LapIdRole:
-        return QString::number(index.row() + 1);
+        return index.row() + 1;
     case Roles::RelativeTimeRole:
         return m_laps.at(index.row()).relativeTime();
     case Roles::AbsoluteTimeRole:
         return m_laps.at(index.row()).absoluteTime();
     case Roles::NoteRole:
         return m_laps.at(index.row()).note();
     case Roles::LapRole:
         return QVariant::fromValue(m_laps.at(index.row()));
     }
 
     if (role == Qt::EditRole && index.column() == columnForRole(Roles::NoteRole)) {
         // prevent the disappear of the old value when double-clicking the item
         return m_laps.at(index.row()).note();
     }
 
     return QVariant::Invalid;
 }
 
 QVariant LapModel::headerData(int section, Qt::Orientation orientation, int role) const
 {
     if (role != Qt::DisplayRole or orientation != Qt::Horizontal)
         return QVariant::Invalid;
 
     switch (roleForColumn(section)) {
     case Roles::LapIdRole:
         return i18nc("lap number", "Lap #");
     case Roles::RelativeTimeRole:
         return i18nc("@title:column", "Lap Time");
     case Roles::AbsoluteTimeRole:
         return i18nc("@title:column", "Global Time");
     case Roles::NoteRole:
         return i18nc("@title:column", "Note");
     case Roles::LapRole:
         break;
     }
 
     return QVariant::Invalid;
 }
 
 bool LapModel::setData(const QModelIndex& index, const QVariant& value, int role)
 {
     if (not index.isValid() or role != Qt::EditRole)
         return false;
 
     if (index.column() != columnForRole(Roles::NoteRole))
         return false;
 
     m_laps[index.row()].setNote(value.toString());
     emit dataChanged(index, index);
 
     return true;
 }
 
 Qt::ItemFlags LapModel::flags(const QModelIndex& index) const
 {
     if (not index.isValid())
         return Qt::ItemIsEnabled;
 
     if (index.column() != columnForRole(Roles::NoteRole))
         return QAbstractTableModel::flags(index);
 
     return QAbstractTableModel::flags(index) | Qt::ItemIsEditable;
 }
 
 void LapModel::setTimeFormat(const TimeFormat& format)
 {
     m_timeFormat = format;
 
     if (not isEmpty()) {
         reload();
     }
 }
 
 void LapModel::append(const Lap& lap)
 {
     // Append the new row at the end.
     beginInsertRows(QModelIndex(), rowCount(), rowCount());
 
     // Either the time of the first lap or the time relative to the last lap.
     const auto relativeTime = m_laps.isEmpty() ? lap.time() : m_laps.last().timeTo(lap);
 
     auto newLap = Lap {lap};
     newLap.setRelativeTime(m_timeFormat.format(relativeTime));
     newLap.setAbsoluteTime(m_timeFormat.format(newLap.time()));
 
     m_laps.append(newLap);
     endInsertRows();
 }
 
 bool LapModel::isEmpty() const
 {
     return m_laps.isEmpty();
 }
 
 int LapModel::columnForRole(LapModel::Roles role) const
 {
     return m_roles.indexOf(role);
 }
 
 void LapModel::addLap(const QTime& lapTime)
 {
     append(Lap {lapTime});
 }
 
 void LapModel::clear()
 {
     beginResetModel();
     m_laps.clear();
     endResetModel();
 }
 
 void LapModel::reload()
 {
     const auto laps = m_laps;
     clear();
 
     for (const auto& lap : laps) {
         append(lap);
     }
 }
 
 LapModel::Roles LapModel::roleForColumn(int column) const
 {
     return m_roles.at(column);
 }