diff --git a/src/config.hpp b/src/config.hpp
index e668a56e..da3f74f7 100644
--- a/src/config.hpp
+++ b/src/config.hpp
@@ -85,7 +85,6 @@ public:
   Config& operator=(const Config&);
 
 public:
-  TFSRef<bool>   foo;
   ConfigBOOL     allow_idmap;
   ConfigBOOL     async_read;
   ConfigBOOL     auto_cache;