diff --git a/src/branches2.hpp b/src/branches2.hpp
index b8b9efbe..da4179b7 100644
--- a/src/branches2.hpp
+++ b/src/branches2.hpp
@@ -23,9 +23,6 @@ public:
   std::vector<BranchTier>::const_iterator begin() const { return _branches.begin(); }
   std::vector<BranchTier>::const_iterator end() const { return _branches.end(); }
 
-public:
-  uint64_t min_free_space;
-
 private:
   std::vector<BranchTier> _branches;
 };