diff --git a/neothesia/src/main.rs b/neothesia/src/main.rs
index f2e4e750..dbbd7764 100644
--- a/neothesia/src/main.rs
+++ b/neothesia/src/main.rs
@@ -325,10 +325,8 @@ fn set_window_icon(window: &winit::window::Window) -> Result<(), Box<dyn std::er
 
     let (w, h) = icon.dimensions();
 
-    let mut icon = icon.into_reader()?;
-
-    let mut buff = Vec::new();
-    icon.read_to_end(&mut buff)?;
+    let mut buff = vec![0; icon.total_bytes() as usize];
+    icon.read_image(&mut buff)?;
 
     window.set_window_icon(Some(winit::window::Icon::from_rgba(buff, w, h)?));