diff --git a/common/main/d_bitset.h b/common/main/d_bitset.h
index a91b74377..9f48e4ee6 100644
--- a/common/main/d_bitset.h
+++ b/common/main/d_bitset.h
@@ -14,9 +14,11 @@ namespace dcx {
  * See d_array.h for a full description.
  */
 template <std::size_t N, typename E>
-struct enumerated_bitset : std::bitset<N>
+class enumerated_bitset : std::bitset<N>
 {
 	using base_type = std::bitset<N>;
+public:
+	using base_type::base_type;
 	constexpr typename base_type::reference operator[](E position)
 	{
 		return this->base_type::operator[](static_cast<std::size_t>(position));