diff --git a/src/branch_tier.hpp b/src/branch_tier.hpp
index 7fa0d14c..7acb0de8 100644
--- a/src/branch_tier.hpp
+++ b/src/branch_tier.hpp
@@ -12,9 +12,6 @@ public:
   BranchTier();
   BranchTier(toml::value const &);
 
-public:
-  uint64_t min_free_space;
-
 public:
   std::vector<Branch2>::iterator begin() { return _branches.begin(); }
   std::vector<Branch2>::iterator end() { return _branches.end(); }