diff --git a/ports/geckolib/glue.rs b/ports/geckolib/glue.rs
index abf966ce937..8ccbcc84e71 100644
--- a/ports/geckolib/glue.rs
+++ b/ports/geckolib/glue.rs
@@ -1024,8 +1024,13 @@ pub extern "C" fn Servo_Element_GetPseudoComputedValues(element: RawGeckoElement
 #[no_mangle]
 pub extern "C" fn Servo_Element_IsDisplayNone(element: RawGeckoElementBorrowed) -> bool {
     let element = GeckoElement(element);
-    let data = element.borrow_data().expect("Invoking Servo_Element_IsDisplayNone on unstyled element");
-    data.styles.is_display_none()
+    let data = element.get_data().expect("Invoking Servo_Element_IsDisplayNone on unstyled element");
+
+    // This function is hot, so we bypass the AtomicRefCell. It would be nice to also assert that
+    // we're not in the servo traversal, but this function is called at various intermediate
+    // checkpoints when managing the traversal on the Gecko side.
+    debug_assert!(is_main_thread());
+    unsafe { &*data.as_ptr() }.styles.is_display_none()
 }
 
 #[no_mangle]