diff --git a/src/transport/unix-transport.cpp b/src/transport/unix-transport.cpp
index 295632a..cbfada8 100644
--- a/src/transport/unix-transport.cpp
+++ b/src/transport/unix-transport.cpp
@@ -111,6 +111,7 @@
 {
   BOOST_ASSERT(static_cast<bool>(m_impl));
   m_impl->close();
+  m_impl.reset();
 }
 
 void