diff --git a/code/compiler/13/global_scope.hpp b/code/compiler/13/global_scope.hpp
index e157493..872bda6 100644
--- a/code/compiler/13/global_scope.hpp
+++ b/code/compiler/13/global_scope.hpp
@@ -40,19 +40,21 @@ struct global_constructor {
 
 using global_constructor_ptr = std::unique_ptr<global_constructor>;
 
-struct global_scope {
-    std::vector<global_function_ptr> functions;
-    std::vector<global_constructor_ptr> constructors;
-    mangler* mng;
+class global_scope {
+    private:
+        std::vector<global_function_ptr> functions;
+        std::vector<global_constructor_ptr> constructors;
+        mangler* mng;
 
-    global_scope(mangler& m) : mng(&m) {}
+    public:
+        global_scope(mangler& m) : mng(&m) {}
 
-    global_function& add_function(
-            const std::string& n, 
-            std::vector<std::string> ps, 
-            ast_ptr b);
-    global_constructor& add_constructor(const std::string& n, int8_t t, size_t a);
+        global_function& add_function(
+                const std::string& n, 
+                std::vector<std::string> ps, 
+                ast_ptr b);
+        global_constructor& add_constructor(const std::string& n, int8_t t, size_t a);
 
-    void compile();
-    void generate_llvm(llvm_context& ctx);
+        void compile();
+        void generate_llvm(llvm_context& ctx);
 };