diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index 5bb95c45..f4f92c30 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -352,6 +352,7 @@ namespace FUSE
                m = &x_.second.mutex;
              });
     const std::lock_guard<std::mutex> lock(*m);
+    fmt::print("locked {}\n",fusepath_);
 
     return open2(fusepath_,ffi_);
   }