diff --git a/src/lib/arch/unix/ArchMultithreadPosix.cpp b/src/lib/arch/unix/ArchMultithreadPosix.cpp
index 599d3b88..7b40dd46 100644
--- a/src/lib/arch/unix/ArchMultithreadPosix.cpp
+++ b/src/lib/arch/unix/ArchMultithreadPosix.cpp
@@ -150,6 +150,7 @@ ArchMultithreadPosix::~ArchMultithreadPosix()
 
     closeMutex(m_threadMutex);
     s_instance = nullptr;
+    delete  m_mainThread;
 }
 
 void