diff --git a/flat_hash_map.hpp b/flat_hash_map.hpp
index b6f991c..2b3a384 100644
--- a/flat_hash_map.hpp
+++ b/flat_hash_map.hpp
@@ -521,6 +521,7 @@ class sherwood_v3_table : private EntryAlloc, private Hasher, private Equal
             if (it->has_value())
                 return { it };
         }
+        return end();
     }
     const_iterator begin() const
     {
@@ -529,6 +530,7 @@ class sherwood_v3_table : private EntryAlloc, private Hasher, private Equal
             if (it->has_value())
                 return { it };
         }
+        return cend();
     }
     const_iterator cbegin() const
     {