Index: dataengines/systemmonitor/systemmonitor.cpp
===================================================================
--- dataengines/systemmonitor/systemmonitor.cpp
+++ dataengines/systemmonitor/systemmonitor.cpp
@@ -138,6 +138,8 @@
                 continue; // logfile data type not currently supported
 
             const QString newSensor = newSensorInfo[0].toString();
+            if (sensors.contains(newSensor))
+              continue;
             sensors.insert(newSensor);
             m_sensors.append(newSensor);
             {