diff --git a/libcolorcorrect/geolocator.cpp b/libcolorcorrect/geolocator.cpp
index 7d2f46cb8..e89526eab 100644
--- a/libcolorcorrect/geolocator.cpp
+++ b/libcolorcorrect/geolocator.cpp
@@ -1,81 +1,82 @@
 /********************************************************************
 Copyright 2017 Roman Gilg <subdiff@gmail.com>
 
 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/>.
 *********************************************************************/
 #include "geolocator.h"
+#include <cmath>
 
 namespace ColorCorrect
 {
 
 Geolocator::Geolocator(QObject *parent)
     : QObject(parent)
 {
     m_engine = dataEngine("geolocation");
 
     if (m_engine && m_engine->isValid()) {
         m_engine->connectSource("location", this);
     }
 }
 
 void Geolocator::dataUpdated(const QString &source, const Plasma::DataEngine::Data &data)
 {
     Q_UNUSED(source);
 
     if (!m_engine) {
         return;
     }
 
     if (data.isEmpty()) {
         return;
     }
 
     auto readGeoDouble = [](const Plasma::DataEngine::Data &data, const QString &key) -> double {
         const Plasma::DataEngine::Data::ConstIterator it = data.find(key);
 
         if (it == data.end()) {
             return qQNaN();
         }
 
         bool ok = false;
         double result = it.value().toDouble(&ok);
         if (!ok) {
             result = qQNaN();
         }
         return result;
     };
 
     double lat = readGeoDouble(data, QStringLiteral("latitude"));
     double lng = readGeoDouble(data, QStringLiteral("longitude"));
     if (std::isnan(lat) || std::isnan(lng)) {
         return;
     }
 
     bool isChanged = false;
     if (m_latitude != lat) {
         m_latitude = lat;
         isChanged = true;
         emit latitudeChanged();
     }
     if (m_longitude != lng) {
         m_longitude = lng;
         isChanged = true;
         emit longitudeChanged();
     }
     if (isChanged) {
         emit locationChanged(m_latitude, m_longitude);
     }
 }
 
 }