diff --git a/source/ast/function_expression.hpp b/source/ast/function_expression.hpp
index f9c3686..5531ab2 100644
--- a/source/ast/function_expression.hpp
+++ b/source/ast/function_expression.hpp
@@ -16,5 +16,5 @@ struct function_expression : callable_expression
     auto compile(compiler& comp) const -> void override;
 
     const statement* body {};
-    mutable std::string name;
+    std::string name;
 };
diff --git a/source/eval/object.hpp b/source/eval/object.hpp
index 78a486b..068a175 100644
--- a/source/eval/object.hpp
+++ b/source/eval/object.hpp
@@ -144,7 +144,7 @@ struct string_object : hashable_object
 
     [[nodiscard]] auto type() const -> object_type override { return object_type::string; }
 
-    [[nodiscard]] auto inspect() const -> std::string override { return value; }
+    [[nodiscard]] auto inspect() const -> std::string override { return fmt::format(R"("{}")", value); }
 
     [[nodiscard]] auto hash_key() const -> hash_key_type override;