diff --git a/core/src/avm1/object.rs b/core/src/avm1/object.rs
index 43f3596de..b896b1373 100644
--- a/core/src/avm1/object.rs
+++ b/core/src/avm1/object.rs
@@ -117,7 +117,7 @@ pub trait TObject<'gc>: 'gc + Collect + Debug + Into<Object<'gc>> + Clone + Copy
     /// Takes an already existing object and performs this constructor (if valid) on it.
     fn construct_on_existing(
         &self,
-        activation: &mut Activation<'_, 'gc, '_>,
+        _activation: &mut Activation<'_, 'gc, '_>,
         mut _this: Object<'gc>,
         _args: &[Value<'gc>],
     ) -> Result<(), Error<'gc>> {
diff --git a/core/src/display_object/movie_clip.rs b/core/src/display_object/movie_clip.rs
index b77a363c7..7e1cf3a6d 100644
--- a/core/src/display_object/movie_clip.rs
+++ b/core/src/display_object/movie_clip.rs
@@ -1159,7 +1159,7 @@ impl<'gc> TDisplayObject<'gc> for MovieClip<'gc> {
                             }
                         }
                     }
-                    self.0.write(context.gc_context).object = Some(object);
+                    self.0.write(activation.context.gc_context).object = Some(object);
                     let _ = constructor.construct_on_existing(&mut activation, object, &[]);
                 }