diff --git a/src/libs/utils/qtcprocess.cpp b/src/libs/utils/qtcprocess.cpp
index b6f8b55bcfa..863601cab41 100644
--- a/src/libs/utils/qtcprocess.cpp
+++ b/src/libs/utils/qtcprocess.cpp
@@ -467,7 +467,6 @@ public:
     void setProcessInterface(ProcessInterface *process)
     {
         m_process.reset(process);
-        m_process->m_setup = m_setup;
         m_setup.m_errorString.clear();
         m_process->setParent(this);
 
@@ -700,6 +699,7 @@ QtcProcess::~QtcProcess()
 void QtcProcess::setProcessInterface(ProcessInterface *interface)
 {
     d->setProcessInterface(interface);
+    d->m_process->m_setup = d->m_setup;
 }
 
 void QtcProcess::setProcessImpl(ProcessImpl processImpl)
diff --git a/src/libs/utils/qtcprocess.h b/src/libs/utils/qtcprocess.h
index 411f34b60ef..f4ff6cde268 100644
--- a/src/libs/utils/qtcprocess.h
+++ b/src/libs/utils/qtcprocess.h
@@ -302,8 +302,6 @@ public:
     virtual void interruptProcess() { QTC_CHECK(false); }
     virtual qint64 applicationMainThreadID() const { QTC_CHECK(false); return -1; }
 
-    ProcessSetupData m_setup;
-
 signals:
     void started();
     void finished();
@@ -314,11 +312,14 @@ signals:
 protected:
     void defaultStart();
 
+    ProcessSetupData m_setup;
+
 private:
     virtual void doDefaultStart(const QString &program, const QStringList &arguments)
     { Q_UNUSED(program) Q_UNUSED(arguments) QTC_CHECK(false); }
     bool dissolveCommand(QString *program, QStringList *arguments);
     bool ensureProgramExists(const QString &program);
+    friend class QtcProcess;
 };