diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e1190ee54..12ac4a3b3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -54,6 +54,7 @@ add_library(libslic3r STATIC
     ${LIBDIR}/libslic3r/BridgeDetector.cpp
     ${LIBDIR}/libslic3r/ClipperUtils.cpp
     ${LIBDIR}/libslic3r/ConfigBase.cpp
+    ${LIBDIR}/libslic3r/Config.cpp
     ${LIBDIR}/libslic3r/ExPolygon.cpp
     ${LIBDIR}/libslic3r/ExPolygonCollection.cpp
     ${LIBDIR}/libslic3r/Extruder.cpp
diff --git a/xs/src/libslic3r/Config.cpp b/xs/src/libslic3r/Config.cpp
new file mode 100644
index 000000000..d9f99cbbc
--- /dev/null
+++ b/xs/src/libslic3r/Config.cpp
@@ -0,0 +1,31 @@
+#include "Config.hpp"
+#include "Log.hpp"
+
+namespace Slic3r {
+
+std::shared_ptr<Config> 
+Config::new_from_defaults() 
+{ 
+    return std::make_shared<Config>();
+}
+std::shared_ptr<Config> 
+Config::new_from_defaults(std::initializer_list<std::string> init)
+{
+    auto my_config(std::make_shared<Config>());
+    for (auto& opt_key : init) {
+        if (print_config_def.has(opt_key)) {
+            const std::string value { print_config_def.get(opt_key)->default_value->serialize() };
+            my_config->set_deserialize(opt_key, value);
+        }
+    }
+
+    return my_config;
+}
+
+std::shared_ptr<Config> 
+new_from_cli(const int& argc, const char* argv[])
+{
+    return std::make_shared<Config>();
+}
+
+} // namespace Slic3r
diff --git a/xs/src/libslic3r/Config.hpp b/xs/src/libslic3r/Config.hpp
index 265cc2201..118309033 100644
--- a/xs/src/libslic3r/Config.hpp
+++ b/xs/src/libslic3r/Config.hpp
@@ -1,19 +1,21 @@
 #ifndef CONFIG_HPP
 #define CONFIG_HPP
 
+#include <initializer_list>
+#include <memory>
+
 #include "PrintConfig.hpp"
 
 namespace Slic3r {
 
 class Config : DynamicPrintConfig {
 public:
-    static Config *new_from_defaults();
-    static Config *new_from_cli(const &argc, const char* argv[]);
+    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_cli(const int& argc, const char* argv[]);
 
     void write_ini(const std::string& file) { save(file); }
     void read_ini(const std::string& file) { load(file); }
-
-
 };
 
 } // namespace Slic3r