diff --git a/xs/src/libslic3r/Config.cpp b/xs/src/libslic3r/Config.cpp
index d9f99cbbc..91e68cc40 100644
--- a/xs/src/libslic3r/Config.cpp
+++ b/xs/src/libslic3r/Config.cpp
@@ -10,6 +10,12 @@ Config::new_from_defaults()
 }
 std::shared_ptr<Config> 
 Config::new_from_defaults(std::initializer_list<std::string> init)
+{
+    return Config::new_from_defaults(t_config_option_keys(init));
+}
+
+std::shared_ptr<Config> 
+Config::new_from_defaults(t_config_option_keys init)
 {
     auto my_config(std::make_shared<Config>());
     for (auto& opt_key : init) {
diff --git a/xs/src/libslic3r/Config.hpp b/xs/src/libslic3r/Config.hpp
index e2049cd32..f8c5e05a4 100644
--- a/xs/src/libslic3r/Config.hpp
+++ b/xs/src/libslic3r/Config.hpp
@@ -5,13 +5,18 @@
 #include <memory>
 
 #include "PrintConfig.hpp"
+#include "ConfigBase.hpp"
 
 namespace Slic3r {
 
+class Config;
+using config_ptr = std::shared_ptr<Config>;
+
 class Config : public DynamicPrintConfig {
 public:
     static std::shared_ptr<Config> new_from_defaults();
     static std::shared_ptr<Config> new_from_defaults(std::initializer_list<std::string> init);
+    static std::shared_ptr<Config> new_from_defaults(t_config_option_keys init);
     static std::shared_ptr<Config> new_from_cli(const int& argc, const char* argv[]);
 
     void write_ini(const std::string& file) { save(file); }