diff --git a/server/simulators.cpp b/server/simulators.cpp
index 608eeec..506b8d6 100644
--- a/server/simulators.cpp
+++ b/server/simulators.cpp
@@ -39,6 +39,12 @@ Simulators::Simulators(uint16_t port, QString can_dev, QString uart_dev, QObject
     });
 }
 
+Simulators::~Simulators()
+{
+    if (m_serial->isOpen())
+        m_serial->close();
+}
+
 std::string Simulators::active_simulator_name() const
 {
     return this->m_current_simulator;
diff --git a/server/simulators.hpp b/server/simulators.hpp
index 0f3a65a..03c8c19 100644
--- a/server/simulators.hpp
+++ b/server/simulators.hpp
@@ -40,6 +40,7 @@ class Simulators : public QObject
     };
 
     Simulators(uint16_t port, QString can_dev, QString uart_dev, QObject *parent = nullptr);
+    ~Simulators();
     std::string active_simulator_name() const;
     void run();
     void stop();