diff --git a/opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQConfig.hpp b/opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQConfig.hpp
index a6515cf2d..6f90e3bd8 100644
--- a/opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQConfig.hpp
+++ b/opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQConfig.hpp
@@ -87,7 +87,7 @@ namespace Opm {
             serializer.map(m_assignments);
             serializer(units);
             input_index.serializeOp(serializer);
-            serializer(type_count);
+            serializer.template map<decltype(type_count),false>(type_count);
             // The UDQFunction table is constant up to udq_params.
             // So we can just construct a new instance here.
             if (!serializer.isSerializing())