diff --git a/src/session_impl.cpp b/src/session_impl.cpp
index 571d85f2a..fbc1025de 100644
--- a/src/session_impl.cpp
+++ b/src/session_impl.cpp
@@ -1777,6 +1777,7 @@ namespace aux {
 #endif
 				TORRENT_ASSERT(false);
 			}
+			m_io_service.reset();
 		}
 		while (!m_abort);