--- a/gfx/wr/webrender/src/render_target.rs
+++ b/gfx/wr/webrender/src/render_target.rs
@@ -1045,16 +1045,17 @@ pub enum BlitJobSource {
 #[cfg_attr(feature = "replay", derive(Deserialize))]
 pub struct BlitJob {
     pub source: BlitJobSource,
     pub target_rect: DeviceIntRect,
 }
 
 #[cfg_attr(feature = "capture", derive(Serialize))]
 #[cfg_attr(feature = "replay", derive(Deserialize))]
+#[derive(Debug)]
 pub struct LineDecorationJob {
     pub task_rect: DeviceRect,
     pub local_size: LayoutSize,
     pub wavy_line_thickness: f32,
     pub style: i32,
     pub orientation: i32,
 }