diff --git a/src/state.hpp b/src/state.hpp
index 6fb8e504..eaf70bc7 100644
--- a/src/state.hpp
+++ b/src/state.hpp
@@ -57,6 +57,7 @@ private:
 
 public:
   OpenFileMap open_files;
+  int root_fd;
 };
 
 extern State state;