diff --git a/ports/servoshell/desktop/headed_window.rs b/ports/servoshell/desktop/headed_window.rs
index 4c97d68a52a..70dc1d480e5 100644
--- a/ports/servoshell/desktop/headed_window.rs
+++ b/ports/servoshell/desktop/headed_window.rs
@@ -24,7 +24,7 @@ use servo::webrender_api::units::{DeviceIntPoint, DeviceIntRect, DeviceIntSize};
 use servo::webrender_api::ScrollLocation;
 use servo::webrender_traits::RenderingContext;
 use surfman::{Connection, Context, Device, SurfaceType};
-use winit::dpi::{LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize};
+use winit::dpi::{LogicalSize, PhysicalPosition, PhysicalSize};
 use winit::event::{ElementState, KeyEvent, MouseButton, MouseScrollDelta, TouchPhase};
 use winit::keyboard::{Key as LogicalKey, ModifiersState, NamedKey};
 #[cfg(any(target_os = "linux", target_os = "windows"))]
@@ -423,8 +423,8 @@ impl WindowPortsMethods for Window {
                         (dx as f64, (dy * LINE_HEIGHT) as f64, WheelMode::DeltaLine)
                     },
                     MouseScrollDelta::PixelDelta(position) => {
-                        let position: LogicalPosition<f64> =
-                            position.to_logical(self.device_hidpi_factor().get() as f64);
+                        let scale_factor = self.device_hidpi_factor().inverse().get() as f64;
+                        let position = position.to_logical(scale_factor);
                         (position.x, position.y, WheelMode::DeltaPixel)
                     },
                 };