diff --git a/include/tao/pq/internal/aggregate.hpp b/include/tao/pq/internal/aggregate.hpp
index f752f7b..0a40123 100644
--- a/include/tao/pq/internal/aggregate.hpp
+++ b/include/tao/pq/internal/aggregate.hpp
@@ -53,7 +53,8 @@ namespace tao::pq::internal
       else {
          constexpr auto cnt = count_aggregate_args< T >;
          if constexpr( cnt == 1 ) {
-            return std::tie( value );
+            const auto& [ a ] = value;
+            return std::tie( a );
          }
          else if constexpr( cnt == 2 ) {
             const auto& [ a, b ] = value;