diff --git a/src/programs/viewer.rs b/src/programs/viewer.rs
index ac61b08..183f71d 100644
--- a/src/programs/viewer.rs
+++ b/src/programs/viewer.rs
@@ -168,7 +168,7 @@ fn main() {
 
     camera.z_near = 0.0001;
 
-    let mut controls: Box<Controls> = if matches.is_present("first person") {
+    let mut controls: Box<dyn Controls> = if matches.is_present("first person") {
         Box::new(FirstPersonControls::new())
     } else {
         Box::new(OrbitControls::new(
diff --git a/src/renderer.rs b/src/renderer.rs
index 3bdc004..dc7b7b5 100644
--- a/src/renderer.rs
+++ b/src/renderer.rs
@@ -8,7 +8,7 @@ use image;
 use image::{DynamicImage, ImageBuffer, Rgba};
 
 use glium::draw_parameters::{Blend, DepthTest};
-use glium::glutin::{ContextCurrentState, PossiblyCurrent as Pc};
+use glium::glutin::PossiblyCurrent as Pc;
 use glium::index::{NoIndices, PrimitiveType};
 use glium::program::ProgramCreationInput;
 use glium::texture::{RawImage2d, SrgbTexture2d, Texture2dDataSink};
@@ -138,7 +138,7 @@ impl Renderer {
     /// Creates a SrgbTexture from a path to an image.
     pub fn make_texture(&self, path: &str) -> SrgbTexture2d {
         let image = match image::open(path) {
-            Ok(r) => r.to_rgba(),
+            Ok(r) => r.to_rgba8(),
             Err(e) => panic!("Error while opening file {}: {}", path, e),
         };