1 files changed, 1 insertions, 1 deletions
diff --git a/components/servo_arc/lib.rs b/components/servo_arc/lib.rs
index 6e86ea7b5f3..1567fd3d421 100644
--- a/components/servo_arc/lib.rs
+++ b/components/servo_arc/lib.rs
@@ -144,7 +144,7 @@ impl<T> UniqueArc<mem::MaybeUninit<T>> {
     #[inline]
     pub unsafe fn assume_init(this: Self) -> UniqueArc<T> {
         UniqueArc(Arc {
-            p: this.0.p.cast(),
+            p: mem::ManuallyDrop::new(this).0.p.cast(),
             phantom: PhantomData,
         })
     }