--- a/layout/style/nsStyleStruct.h
+++ b/layout/style/nsStyleStruct.h
@@ -3953,17 +3953,17 @@ struct nsSize_Simple {
   nscoord width, height;
 };
 
 STATIC_ASSERT_TYPE_LAYOUTS_MATCH(nsSize, nsSize_Simple);
 STATIC_ASSERT_FIELD_OFFSET_MATCHES(nsSize, nsSize_Simple, width);
 STATIC_ASSERT_FIELD_OFFSET_MATCHES(nsSize, nsSize_Simple, height);
 
 /**
- * <div rustbindgen="true" replaces="mozilla_UniquePtr">
+ * <div rustbindgen="true" replaces="mozilla::UniquePtr">
  *
  * TODO(Emilio): This is a workaround and we should be able to get rid of this
  * one.
  */
 template<typename T, typename Deleter = mozilla::DefaultDelete<T>>
 struct UniquePtr_Simple {
   T* mPtr;
 };