diff --git a/crates/fj-viewer/src/gui.rs b/crates/fj-viewer/src/gui.rs
index 549f897b1..a01fab7fd 100644
--- a/crates/fj-viewer/src/gui.rs
+++ b/crates/fj-viewer/src/gui.rs
@@ -79,12 +79,14 @@ impl Gui {
 
     pub(crate) fn update(
         &mut self,
+        pixels_per_point: f32,
         egui_input: egui::RawInput,
         config: &mut DrawConfig,
         aabb: &Aabb<3>,
         status: &StatusReport,
         line_drawing_available: bool,
     ) {
+        self.context.set_pixels_per_point(pixels_per_point);
         self.context.begin_frame(egui_input);
 
         let bounding_box_size = {
diff --git a/crates/fj-viewer/src/viewer.rs b/crates/fj-viewer/src/viewer.rs
index c2ec17af6..7f53e9d5c 100644
--- a/crates/fj-viewer/src/viewer.rs
+++ b/crates/fj-viewer/src/viewer.rs
@@ -119,7 +119,7 @@ impl Viewer {
     /// Draw the graphics
     pub fn draw(
         &mut self,
-        scale_factor: f32,
+        pixels_per_point: f32,
         status: &mut StatusReport,
         egui_input: egui::RawInput,
     ) {
@@ -132,6 +132,7 @@ impl Viewer {
         self.camera.update_planes(&aabb);
 
         self.gui.update(
+            pixels_per_point,
             egui_input,
             &mut self.draw_config,
             &aabb,
@@ -142,7 +143,7 @@ impl Viewer {
         if let Err(err) = self.renderer.draw(
             &self.camera,
             &self.draw_config,
-            scale_factor,
+            pixels_per_point,
             &mut self.gui,
         ) {
             warn!("Draw error: {}", err);
diff --git a/crates/fj-window/src/run.rs b/crates/fj-window/src/run.rs
index 37ef1fc4d..08a432763 100644
--- a/crates/fj-window/src/run.rs
+++ b/crates/fj-window/src/run.rs
@@ -201,14 +201,13 @@ pub fn run(
                     viewer.handle_screen_resize(size);
                 }
 
+                let pixels_per_point = window.window().scale_factor() as f32;
+
+                egui_winit_state.set_pixels_per_point(pixels_per_point);
                 let egui_input =
                     egui_winit_state.take_egui_input(window.window());
 
-                viewer.draw(
-                    window.window().scale_factor() as f32,
-                    &mut status,
-                    egui_input,
-                );
+                viewer.draw(pixels_per_point, &mut status, egui_input);
             }
             _ => {}
         }