diff --git a/vendored/libfuse/lib/fuse_loop.cpp b/vendored/libfuse/lib/fuse_loop.cpp
index 7194871b..f310cfec 100644
--- a/vendored/libfuse/lib/fuse_loop.cpp
+++ b/vendored/libfuse/lib/fuse_loop.cpp
@@ -57,6 +57,13 @@ _print_error(int rv_)
              -rv_);
 }
 
+static
+int
+_nproc()
+{
+  return std::max(1,(int)std::thread::hardware_concurrency());
+}
+
 struct AsyncWorker
 {
   fuse_session *_se;