diff --git a/lib/src/Startup.cpp b/lib/src/Startup.cpp
index fc5721c..78aaa81 100644
--- a/lib/src/Startup.cpp
+++ b/lib/src/Startup.cpp
@@ -2,10 +2,9 @@
 
 #include <cstdlib>
 #include <iostream>
-#include <optional>
-#include <memory>
 #include <fstream>
 #include <utility>
+
 #include <unistd.h>
 
 #define DOCTEST_CONFIG_IMPLEMENT
@@ -41,27 +40,22 @@ auto main(int argc, char ** argv) -> int
       return doctest::Context{argc, argv}.run();
     }
 
-    std::unique_ptr<std::istream, void(*)(std::istream*)> in
-      {in_name
-        ? decltype(in){new std::ifstream{in_name}, [](auto p) { delete p; }}
-        : decltype(in){&std::cin, [](auto){}}};
+    std::ifstream fin;
+    std::ofstream fout;
+    std::istream & in  {in_name  ? fin  = std::ifstream{in_name } : std::cin };
+    std::ostream & out {out_name ? fout = std::ofstream{out_name} : std::cout};
 
-    if (in->fail()) {
+    if (in.fail()) {
       std::cerr << "Bad input file" << std::endl;
       return 1;
     }
 
-    std::unique_ptr<std::ostream, void(*)(std::ostream*)> out
-      {out_name
-        ? decltype(out){new std::ofstream{out_name}, [](auto p) { delete p; }}
-        : decltype(out){&std::cout, [](auto){}}};
-
-    if (out->fail()) {
+    if (out.fail()) {
       std::cerr << "Bad output file" << std::endl;
       return 1;
     }
 
-    Main(*in, *out);
+    Main(in, out);
   } catch (std::exception const& e) {
     std::cerr << "Program failed: " << e.what() << std::endl;
     return 1;