diff --git a/include/cpphibernate/driver/mariadb/helper/type_properties.h b/include/cpphibernate/driver/mariadb/helper/type_properties.h
index 5d781e6..ddb211a 100644
--- a/include/cpphibernate/driver/mariadb/helper/type_properties.h
+++ b/include/cpphibernate/driver/mariadb/helper/type_properties.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#include <cpputils/misc/enum.h>
+#include <cpputils/misc/flags.h>
+#include <cpputils/misc/string.h>
+
 #include <cpphibernate/misc.h>
 #include <cpphibernate/types.h>
 #include <cpphibernate/config.h>
@@ -557,7 +561,7 @@ beg_namespace_cpphibernate_driver_mariadb
             {
                 if (first)  first = false;
                 else        os << ",";
-                utl::to_string(os, static_cast<int>(e));
+                os << utl::enum_conversion<enum_type>::to_string(e, false);
             }
             return os.str();
         }