1 files changed, 2 insertions, 0 deletions
diff --git a/components/script/dom/cssstylesheet.rs b/components/script/dom/cssstylesheet.rs
index f25ffa14b8e..4b1a7e1e63a 100644
--- a/components/script/dom/cssstylesheet.rs
+++ b/components/script/dom/cssstylesheet.rs
@@ -21,6 +21,7 @@ use crate::dom::medialist::MediaList;
 use crate::dom::node::{stylesheets_owner_from_node, Node};
 use crate::dom::stylesheet::StyleSheet;
 use crate::dom::window::Window;
+use crate::script_runtime::CanGc;
 
 #[dom_struct]
 pub struct CSSStyleSheet {
@@ -64,6 +65,7 @@ impl CSSStyleSheet {
                 owner, type_, href, title, stylesheet,
             )),
             window,
+            CanGc::note(),
         )
     }