1 files changed, 3 insertions, 0 deletions
diff --git a/components/script/dom/bindings/trace.rs b/components/script/dom/bindings/trace.rs
index aec55e62134..31dcc99daaa 100644
--- a/components/script/dom/bindings/trace.rs
+++ b/components/script/dom/bindings/trace.rs
@@ -33,6 +33,7 @@ use canvas_traits::WebGLError;
 use canvas_traits::{CanvasGradientStop, LinearGradientStyle, RadialGradientStyle};
 use canvas_traits::{CompositionOrBlending, LineCapStyle, LineJoinStyle, RepetitionStyle};
 use cssparser::RGBA;
+use devtools_traits::CSSError;
 use devtools_traits::WorkerId;
 use dom::bindings::js::{JS, Root};
 use dom::bindings::refcounted::Trusted;
@@ -98,6 +99,8 @@ pub trait JSTraceable {
     fn trace(&self, trc: *mut JSTracer);
 }
 
+no_jsmanaged_fields!(CSSError);
+
 no_jsmanaged_fields!(EncodingRef);
 
 no_jsmanaged_fields!(Reflector);