diff --git a/src/gui.rs b/src/gui.rs
index 5669825..07ebf95 100644
--- a/src/gui.rs
+++ b/src/gui.rs
@@ -7,12 +7,20 @@ use iced::{Alignment, Element, Application, Settings, Subscription, Theme, Comma
 
 use crate::engine::OutputEngine;
 
-pub fn main(outputEngine: &(impl OutputEngine + ?Sized)) -> iced::Result {
+pub fn main(outputEngine: Box<dyn OutputEngine>) -> iced::Result {
+   let def: iced::Settings<()> = Settings::default();
    let settings = Settings{
       flags: Flags {
-         //outputEngine: outputEngine,
+         outputEngine: outputEngine,
       },
-      ..Settings::<Flags>::default()
+      antialiasing: def.antialiasing,
+      default_font: def.default_font,
+      default_text_size: def.default_text_size,
+      exit_on_close_request: def.exit_on_close_request,
+      id: def.id,
+      text_multithreading: def.text_multithreading,
+      try_opengles_first: def.try_opengles_first,
+      window: def.window,
    };
    Main::run(settings)
 }
@@ -24,9 +32,8 @@ struct Main {
    flags: Flags,
 }
 
-#[derive(Default)]
 struct Flags {
-   //outputEngine: impl OutputEngine,
+   outputEngine: Box<dyn OutputEngine>,
 }
 
 struct Inputs {
diff --git a/src/main.rs b/src/main.rs
index 3237d89..875105a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,8 +5,8 @@ mod gui;
 fn main() {
    let cfg = config::build_config().unwrap();
    if cfg.streams.input.engine.name == "gui" {
-      let mut output_engine = engine::build_output_engine(&cfg.streams.output.engine);
-      gui::main(&*output_engine).unwrap();
+      let output_engine = engine::build_output_engine(&cfg.streams.output.engine);
+      gui::main(output_engine).unwrap();
    } else {
       main_cli(cfg);
    }