diff --git a/OMEdit/OMEditGUI/Simulation/OpcUaClient.cpp b/OMEdit/OMEditGUI/Simulation/OpcUaClient.cpp
index 52e73f25415..8e2225e855e 100644
--- a/OMEdit/OMEditGUI/Simulation/OpcUaClient.cpp
+++ b/OMEdit/OMEditGUI/Simulation/OpcUaClient.cpp
@@ -7,14 +7,6 @@
 #include <QThread>
 #include <QDebug>
 
-class SleepThread : public QThread {
-public:
-   // Work-around for Qt4 having msleep as protected
-   static inline void msleep(unsigned long msecs) {
-       QThread::msleep(msecs);
-   }
-};
-
 /*!
   Write the value value to the real node with id id.
   */
@@ -97,7 +89,7 @@ bool OpcUaClient::connectToServer()
   mpClient = UA_Client_new(UA_ClientConfig_standard);
   UA_StatusCode returnValue;
   do {
-    SleepThread::msleep(100);
+    Sleep::msleep(100);
     // QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
     returnValue = UA_Client_connect(mpClient, endPoint.c_str());
   } while (returnValue != UA_STATUSCODE_GOOD);
@@ -368,7 +360,7 @@ void OpcUaWorker::startInteractiveSimulation()
       }
     } else {
       QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
-      SleepThread::msleep(mServerSampleInterval);
+      Sleep::msleep(mServerSampleInterval);
     }
   }
 }
diff --git a/OMEdit/OMEditGUI/Simulation/OpcUaClient.h b/OMEdit/OMEditGUI/Simulation/OpcUaClient.h
index f17b30ae209..6e492cb95ce 100644
--- a/OMEdit/OMEditGUI/Simulation/OpcUaClient.h
+++ b/OMEdit/OMEditGUI/Simulation/OpcUaClient.h
@@ -78,6 +78,8 @@ private slots:
   OpcUaClient *mpParentClient;
   VariablesTreeItem *mpVariablesTreeItemRoot;
   QTime mClock;
+  bool mSimulateWithSteps;
+  const double mSampleInterval;
   double mInterval, mSpeedValue, mServerSampleInterval;
   bool mIsRunning;
 
@@ -92,8 +94,6 @@ private slots:
   static QThreadStorage<double> mCurrentTime;
   static QThreadStorage<int> mInt;
   UA_UInt32 mSubscriptionId;
-  bool mSimulateWithSteps;
-  const double mSampleInterval;
 signals:
   void sendUpdateCurves();
   void sendUpdateYAxis(double, double);