diff --git a/src/config.hpp b/src/config.hpp
index ce0793ac..d0a81e51 100644
--- a/src/config.hpp
+++ b/src/config.hpp
@@ -148,6 +148,7 @@ public:
   ConfigINT      fuse_process_thread_queue_depth;
   ConfigSTR      fuse_pin_threads;
   TFSRef<s64>    uid;
+  TFSRef<s64>    umask;
   ConfigSTR      version;
   ConfigBOOL     writeback_cache;
   XAttr          xattr;