diff --git a/src/plugins/remotelinux/linuxdevice.cpp b/src/plugins/remotelinux/linuxdevice.cpp
index c4b21a1f413..e539d9733d0 100644
--- a/src/plugins/remotelinux/linuxdevice.cpp
+++ b/src/plugins/remotelinux/linuxdevice.cpp
@@ -1170,6 +1170,7 @@ LinuxDevicePrivate::LinuxDevicePrivate(LinuxDevice *parent)
 
 LinuxDevicePrivate::~LinuxDevicePrivate()
 {
+    QMutexLocker locker(&m_shellMutex);
     auto closeShell = [this] {
         m_shellThread.quit();
         m_shellThread.wait();