diff --git a/ports/geckolib/glue.rs b/ports/geckolib/glue.rs
index f7aca89a524..69b2dfbf905 100644
--- a/ports/geckolib/glue.rs
+++ b/ports/geckolib/glue.rs
@@ -1122,6 +1122,12 @@ pub extern "C" fn Servo_StyleSet_RebuildData(raw_data: RawServoStyleSetBorrowed)
     data.reset_device(&guard);
 }
 
+#[no_mangle]
+pub extern "C" fn Servo_StyleSet_Clear(raw_data: RawServoStyleSetBorrowed) {
+    let mut data = PerDocumentStyleData::from_ffi(raw_data).borrow_mut();
+    data.clear_stylist();
+}
+
 #[no_mangle]
 pub extern "C" fn Servo_StyleSet_Drop(data: RawServoStyleSetOwned) {
     let _ = data.into_box::<PerDocumentStyleData>();