diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index 6754265f..5bb95c45 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -349,7 +349,7 @@ namespace FUSE
     pt.visit(fusepath_,
              [&](const PTMap::value_type &x_)
              {
-               m = x_.second.mutex;
+               m = &x_.second.mutex;
              });
     const std::lock_guard<std::mutex> lock(*m);