diff --git a/src/trekstor.rs b/src/trekstor.rs
index fbb8b1c..0e73d5e 100644
--- a/src/trekstor.rs
+++ b/src/trekstor.rs
@@ -43,7 +43,7 @@ impl Platform for Trekstor {
 
         let mut buffer1 = [Rgb565Pixel(0); 512 * 512];
 
-        let window_width = 512;
+        let window_width = ctx.screen.width();
         // let window_height = ctx.screen.height() - 1;
 
         loop {