diff --git a/src/lib/eolian_cxx/eo_types.hh b/src/lib/eolian_cxx/eo_types.hh
index f9b8946721..08bbd731fb 100644
--- a/src/lib/eolian_cxx/eo_types.hh
+++ b/src/lib/eolian_cxx/eo_types.hh
@@ -114,7 +114,7 @@ type_is_binding(eolian_type_instance const& type)
 inline eolian_type
 type_to_native(eolian_type const& type)
 {
-   eolian_type native = type;
+   eolian_type native(type);
    native.binding.clear();
    native.category = eolian_type::simple_;
    return native;
diff --git a/src/lib/eolian_cxx/eo_validate.hh b/src/lib/eolian_cxx/eo_validate.hh
index 4f131a0192..53bfec5b4f 100644
--- a/src/lib/eolian_cxx/eo_validate.hh
+++ b/src/lib/eolian_cxx/eo_validate.hh
@@ -51,7 +51,7 @@ _is_valid(events_container_type const& events)
 
 template <typename T>
 inline void
-_validate(T val, const eo_class& cls)
+_validate(T const& val, eo_class const& cls)
 {
    if(!_is_valid(val))
      {