diff --git a/vendored/libfuse/lib/fuse.cpp b/vendored/libfuse/lib/fuse.cpp
index 8648b450..f20b9b89 100644
--- a/vendored/libfuse/lib/fuse.cpp
+++ b/vendored/libfuse/lib/fuse.cpp
@@ -2430,7 +2430,7 @@ fuse_lib_readdir(fuse_req_t            *req_,
 
   d = &dh->d;
 
-  mutex_lock(dh->lock);
+  mutex_lockguard(dh->lock);
 
   rv = 0;
   if((arg->offset == 0) || (kv_size(d->data) == 0))