diff --git a/sdrbase/commands/command.cpp b/sdrbase/commands/command.cpp
index 097bb42da..d1d52c2d9 100644
--- a/sdrbase/commands/command.cpp
+++ b/sdrbase/commands/command.cpp
@@ -14,12 +14,14 @@
 // along with this program. If not, see <http://www.gnu.org/licenses/>.          //
 ///////////////////////////////////////////////////////////////////////////////////
 
-#include "command.h"
-#include "util/simpleserializer.h"
+#include <chrono>
 
 #include <QKeySequence>
 #include <QProcess>
 
+#include "command.h"
+#include "util/simpleserializer.h"
+
 Command::Command() :
     m_currentProcess(nullptr),
     m_currentProcessState(QProcess::NotRunning),
@@ -30,8 +32,8 @@ Command::Command() :
     m_currentProcessExitStatus(QProcess::NormalExit),
     m_currentProcessPid(0)
 {
-    m_currentProcessStartTimeStamp = 0;
-    m_currentProcessFinishTimeStamp = 0;
+    m_currentProcessStartTimeStampms = 0;
+    m_currentProcessFinishTimeStampms = 0;
 
     resetToDefaults();
 }
@@ -55,8 +57,8 @@ Command::Command(const Command& command) :
         m_currentProcessExitStatus(QProcess::NormalExit),
         m_currentProcessPid(0)
 {
-    m_currentProcessStartTimeStamp = 0;
-    m_currentProcessFinishTimeStamp = 0;
+    m_currentProcessStartTimeStampms = 0;
+    m_currentProcessFinishTimeStampms = 0;
 }
 
 Command::~Command()
@@ -198,7 +200,7 @@ void Command::run(const QString& apiAddress, int apiPort, int deviceSetIndex)
     connect(m_currentProcess, SIGNAL(stateChanged(QProcess::ProcessState)), this, SLOT(processStateChanged(QProcess::ProcessState)));
 
     m_currentProcess->setProcessChannelMode(QProcess::MergedChannels);
-    m_currentProcessStartTimeStamp = clock();
+    m_currentProcessStartTimeStampms = nowms();
     m_currentProcess->start(m_currentProcessCommandLine);
 }
 
@@ -254,7 +256,7 @@ void Command::processStateChanged(QProcess::ProcessState newState)
 void Command::processError(QProcess::ProcessError error)
 {
     //qDebug("Command::processError: %d state: %d", error, m_currentProcessState);
-    m_currentProcessFinishTimeStamp = clock();
+    m_currentProcessFinishTimeStampms = nowms();
     m_currentProcessError = error;
     m_isInError = true;
 
@@ -278,7 +280,7 @@ void Command::processError(QProcess::ProcessError error)
 void Command::processFinished(int exitCode, QProcess::ExitStatus exitStatus)
 {
     //qDebug("Command::processFinished: (%d) %d", exitCode, exitStatus);
-    m_currentProcessFinishTimeStamp = clock();
+    m_currentProcessFinishTimeStampms = nowms();
     m_currentProcessExitCode = exitCode;
     m_currentProcessExitStatus = exitStatus;
     m_hasExited = true;
@@ -295,3 +297,13 @@ void Command::processFinished(int exitCode, QProcess::ExitStatus exitStatus)
     m_currentProcess->deleteLater(); // make sure other threads can still access it until all events have been processed
     m_currentProcess = nullptr; // for this thread it can assume it was deleted
 }
+
+uint64_t Command::nowms()
+{
+    auto now = std::chrono::system_clock::now();
+    auto now_ms = std::chrono::time_point_cast<std::chrono::milliseconds>(now);
+    auto epoch = now_ms.time_since_epoch();
+    auto value = std::chrono::duration_cast<std::chrono::milliseconds>(epoch);
+
+    return value.count();
+}
\ No newline at end of file
diff --git a/sdrbase/commands/command.h b/sdrbase/commands/command.h
index b61442ad1..92e628ead 100644
--- a/sdrbase/commands/command.h
+++ b/sdrbase/commands/command.h
@@ -63,8 +63,8 @@ public:
     bool getLastProcessError(QProcess::ProcessError& error) const;
     bool getLastProcessExit(int& exitCode, QProcess::ExitStatus& exitStatus) const;
     const QString& getLastProcessLog() const;
-    clock_t  getLastProcessStartTimestamp() const { return m_currentProcessStartTimeStamp; }
-    clock_t  getLastProcessFinishTimestamp() const { return m_currentProcessFinishTimeStamp; }
+    uint64_t  getLastProcessStartTimestampms() const { return m_currentProcessStartTimeStampms; }
+    uint64_t  getLastProcessFinishTimestampms() const { return m_currentProcessFinishTimeStampms; }
     const QString& getLastProcessCommandLine() const { return m_currentProcessCommandLine; }
     qint64 getLastProcessPid() const { return m_currentProcessPid; }
 
@@ -91,6 +91,8 @@ public:
     }
 
 private:
+    uint64_t nowms(); //!< Get now time in milliseconds
+
     QString m_group;
     QString m_description;
     QString m_command;
@@ -107,8 +109,8 @@ private:
     int m_currentProcessExitCode;
     QProcess::ExitStatus m_currentProcessExitStatus;
     QString m_log;
-    clock_t  m_currentProcessStartTimeStamp;
-    clock_t  m_currentProcessFinishTimeStamp;
+    uint64_t  m_currentProcessStartTimeStampms;
+    uint64_t  m_currentProcessFinishTimeStampms;
     QString m_currentProcessCommandLine;
     qint64 m_currentProcessPid;
 
diff --git a/sdrbase/dsp/nullsink.cpp b/sdrbase/dsp/nullsink.cpp
index 5f1b7a3fa..b244dc15e 100644
--- a/sdrbase/dsp/nullsink.cpp
+++ b/sdrbase/dsp/nullsink.cpp
@@ -13,7 +13,7 @@ NullSink::~NullSink()
 
 bool NullSink::init(const Message& message)
 {
-    (void) message
+    (void) message;
 	return false;
 }
 
diff --git a/sdrgui/gui/commandoutputdialog.cpp b/sdrgui/gui/commandoutputdialog.cpp
index 01bd3e2e7..0c9d2adf9 100644
--- a/sdrgui/gui/commandoutputdialog.cpp
+++ b/sdrgui/gui/commandoutputdialog.cpp
@@ -39,24 +39,22 @@ void CommandOutputDialog::refresh()
     ui->commandText->setText(m_command.getLastProcessCommandLine());
     ui->processPid->setText(QString("%1").arg(m_command.getLastProcessPid()));
 
-    if (m_command.getLastProcessStartTimestamp() == 0) {
+    if (m_command.getLastProcessStartTimestampms() == 0) {
         ui->startTime->setText(("..."));
     }
     else
     {
-        clock_t tv = m_command.getLastProcessStartTimestamp();
-        QDateTime dt = QDateTime::fromMSecsSinceEpoch((tv * 1000LL) / CLOCKS_PER_SEC);
+        QDateTime dt = QDateTime::fromMSecsSinceEpoch(m_command.getLastProcessStartTimestampms());
         QString dateStr = dt.toString("yyyy-MM-dd HH:mm:ss.zzz");
         ui->startTime->setText(dateStr);
     }
 
-    if (m_command.getLastProcessFinishTimestamp() == 0) {
+    if (m_command.getLastProcessFinishTimestampms() == 0) {
         ui->endTime->setText(("..."));
     }
     else
     {
-        clock_t tv = m_command.getLastProcessFinishTimestamp();
-        QDateTime dt = QDateTime::fromMSecsSinceEpoch((tv * 1000LL) / CLOCKS_PER_SEC);
+        QDateTime dt = QDateTime::fromMSecsSinceEpoch(m_command.getLastProcessFinishTimestampms());
         QString dateStr = dt.toString("yyyy-MM-dd HH:mm:ss.zzz");
         ui->endTime->setText(dateStr);
     }
@@ -64,7 +62,7 @@ void CommandOutputDialog::refresh()
     ui->runningState->setChecked(m_command.getLastProcessState() == QProcess::Running);
     QProcess::ProcessError processError;
 
-    if (m_command.getLastProcessStartTimestamp() == 0) // not started
+    if (m_command.getLastProcessStartTimestampms() == 0) // not started
     {
         ui->errorText->setText("...");
         ui->exitCode->setText("-");