diff --git a/plugins/samplemimo/testmi/testmi.cpp b/plugins/samplemimo/testmi/testmi.cpp
index 0bb04e505..e01b8fb58 100644
--- a/plugins/samplemimo/testmi/testmi.cpp
+++ b/plugins/samplemimo/testmi/testmi.cpp
@@ -22,6 +22,7 @@
 #include <QNetworkReply>
 #include <QNetworkAccessManager>
 #include <QBuffer>
+#include <QThread>
 
 #include "SWGDeviceSettings.h"
 #include "SWGDeviceState.h"
diff --git a/plugins/samplemimo/testmi/testmi.h b/plugins/samplemimo/testmi/testmi.h
index 569bf641e..db6e60431 100644
--- a/plugins/samplemimo/testmi/testmi.h
+++ b/plugins/samplemimo/testmi/testmi.h
@@ -22,7 +22,6 @@
 #include <QByteArray>
 #include <QTimer>
 #include <QNetworkRequest>
-#include <QThread>
 
 #include "dsp/devicesamplemimo.h"
 #include "testmisettings.h"
@@ -31,6 +30,7 @@ class DeviceAPI;
 class TestMIWorker;
 class QNetworkAccessManager;
 class QNetworkReply;
+class QThread;
 
 class TestMI : public DeviceSampleMIMO {
     Q_OBJECT
diff --git a/plugins/samplemimo/testmosync/testmosync.cpp b/plugins/samplemimo/testmosync/testmosync.cpp
index dccbb91df..463eb2730 100644
--- a/plugins/samplemimo/testmosync/testmosync.cpp
+++ b/plugins/samplemimo/testmosync/testmosync.cpp
@@ -20,6 +20,7 @@
 
 #include <QDebug>
 #include <QBuffer>
+#include <QThread>
 
 #include "SWGDeviceSettings.h"
 #include "SWGDeviceState.h"
@@ -42,6 +43,7 @@ TestMOSync::TestMOSync(DeviceAPI *deviceAPI) :
     m_spectrumVis(SDR_TX_SCALEF),
 	m_settings(),
     m_sinkWorker(nullptr),
+    m_sinkWorkerThread(nullptr),
 	m_deviceDescription("TestMOSync"),
     m_runningTx(false),
     m_masterTimer(deviceAPI->getMasterTimer()),
@@ -68,15 +70,20 @@ void TestMOSync::init()
 
 bool TestMOSync::startTx()
 {
-    qDebug("TestMOSync::startTx");
 	QMutexLocker mutexLocker(&m_mutex);
 
     if (m_runningTx) {
-        stopTx();
+        return true;
     }
 
+    qDebug("TestMOSync::startTx");
+    m_sinkWorkerThread = new QThread();
     m_sinkWorker = new TestMOSyncWorker();
-    m_sinkWorker->moveToThread(&m_sinkWorkerThread);
+    m_sinkWorker->moveToThread(m_sinkWorkerThread);
+
+    QObject::connect(m_sinkWorkerThread, &QThread::finished, m_sinkWorker, &QObject::deleteLater);
+    QObject::connect(m_sinkWorkerThread, &QThread::finished, m_sinkWorkerThread, &QThread::deleteLater);
+
     m_sampleMOFifo.reset();
     m_sinkWorker->setFifo(&m_sampleMOFifo);
     m_sinkWorker->setFcPos(m_settings.m_fcPosTx);
@@ -94,31 +101,31 @@ bool TestMOSync::startTx()
 
 void TestMOSync::stopTx()
 {
-    qDebug("TestMOSync::stopTx");
+	QMutexLocker mutexLocker(&m_mutex);
 
-    if (!m_sinkWorker) {
+    if (!m_runningTx) {
         return;
     }
 
-	QMutexLocker mutexLocker(&m_mutex);
+    qDebug("TestMOSync::stopTx");
+    m_runningTx = false;
 
     stopWorker();
-    delete m_sinkWorker;
     m_sinkWorker = nullptr;
-    m_runningTx = false;
+    m_sinkWorkerThread = nullptr;
 }
 
 void TestMOSync::startWorker()
 {
     m_sinkWorker->startWork();
-    m_sinkWorkerThread.start();
+    m_sinkWorkerThread->start();
 }
 
 void TestMOSync::stopWorker()
 {
     m_sinkWorker->stopWork();
-    m_sinkWorkerThread.quit();
-    m_sinkWorkerThread.wait();
+    m_sinkWorkerThread->quit();
+    m_sinkWorkerThread->wait();
 }
 
 QByteArray TestMOSync::serialize() const
diff --git a/plugins/samplemimo/testmosync/testmosync.h b/plugins/samplemimo/testmosync/testmosync.h
index 76caf2587..11c1066f7 100644
--- a/plugins/samplemimo/testmosync/testmosync.h
+++ b/plugins/samplemimo/testmosync/testmosync.h
@@ -23,7 +23,6 @@
 #include <QString>
 #include <QByteArray>
 #include <QTimer>
-#include <QThread>
 
 #include "dsp/devicesamplemimo.h"
 #include "dsp/spectrumvis.h"
@@ -32,6 +31,7 @@
 class DeviceAPI;
 class TestMOSyncWorker;
 class BasebandSampleSink;
+class QThread;
 
 class TestMOSync : public DeviceSampleMIMO {
     Q_OBJECT
@@ -153,8 +153,8 @@ private:
 	QMutex m_mutex;
     SpectrumVis m_spectrumVis;
 	TestMOSyncSettings m_settings;
-    TestMOSyncWorker* m_sinkWorker;
-    QThread m_sinkWorkerThread;
+    TestMOSyncWorker *m_sinkWorker;
+    QThread *m_sinkWorkerThread;
 	QString m_deviceDescription;
 	bool m_runningTx;
     const QTimer& m_masterTimer;