diff --git a/tests/unit/lcos/shared_mutex/thread_group.hpp b/tests/unit/lcos/shared_mutex/thread_group.hpp
index 29414f5a02dc..a5ec3f925da7 100644
--- a/tests/unit/lcos/shared_mutex/thread_group.hpp
+++ b/tests/unit/lcos/shared_mutex/thread_group.hpp
@@ -15,7 +15,7 @@
 #include <hpx/lcos/local/mutex.hpp>
 #include <hpx/util/move.hpp>
 
-#include <boost/thread/lock_guard.hpp>
+#include <boost/thread/locks.hpp>
 
 #include <list>
 #include <algorithm>