diff --git a/libos/src/Timer.cpp b/libos/src/Timer.cpp
index 42db3804..f8309abd 100644
--- a/libos/src/Timer.cpp
+++ b/libos/src/Timer.cpp
@@ -110,6 +110,10 @@ namespace os
 
     Timer::~Timer()
     {
-        if (m_timerid >= 0) timer_delete(m_timerid);
+        if (m_timerid >= 0)
+        {
+            if (!m_stopped) stop();
+            timer_delete(m_timerid);
+        }
     }
 }