diff --git a/components/script/dom/bytelengthqueuingstrategy.rs b/components/script/dom/bytelengthqueuingstrategy.rs
index b4916879c7f..6ebffe81314 100644
--- a/components/script/dom/bytelengthqueuingstrategy.rs
+++ b/components/script/dom/bytelengthqueuingstrategy.rs
@@ -62,7 +62,7 @@ impl ByteLengthQueuingStrategyMethods<crate::DomTypeHolder> for ByteLengthQueuin
     }
 
     /// <https://streams.spec.whatwg.org/#blqs-size>
-    fn GetSize(&self) -> Fallible<Rc<Function>> {
+    fn GetSize(&self, _can_gc: CanGc) -> Fallible<Rc<Function>> {
         let global = self.global();
         // Return this's relevant global object's byte length queuing strategy
         // size function.
diff --git a/components/script_bindings/codegen/Bindings.conf b/components/script_bindings/codegen/Bindings.conf
index 4cf1e8fa039..f5e61114a4b 100644
--- a/components/script_bindings/codegen/Bindings.conf
+++ b/components/script_bindings/codegen/Bindings.conf
@@ -66,6 +66,10 @@ DOMInterfaces = {
     'canGc': ['GetCharacteristic', 'GetCharacteristics', 'GetIncludedService', 'GetIncludedServices'],
 },
 
+'ByteLengthQueuingStrategy': {
+    'canGc': ['GetSize'],
+},
+
 'CanvasGradient': {
     'canGc': ['AddColorStop'],
 },