diff --git a/include/boost/unordered/unordered_flat_map.hpp b/include/boost/unordered/unordered_flat_map.hpp
index 82fdd479..85c919d8 100644
--- a/include/boost/unordered/unordered_flat_map.hpp
+++ b/include/boost/unordered/unordered_flat_map.hpp
@@ -189,7 +189,7 @@ namespace boost {
       void insert(InputIterator first, InputIterator last)
       {
         for (auto pos = first; pos != last; ++pos) {
-          table_.insert(*pos);
+          table_.insert(value_type(*pos));
         }
       }