diff --git a/src/branch_tier.cpp b/src/branch_tier.cpp
index 19c2b0da..4fc54b77 100644
--- a/src/branch_tier.cpp
+++ b/src/branch_tier.cpp
@@ -16,7 +16,7 @@ BranchTier::BranchTier(toml::value const &v_)
       auto const &table = branch.as_table();
       std::string type;
 
-      type = table.at("type");
+      type = table.at("type").as_string();
 
       fmt::print("{}\n",type);
     }