diff --git a/src/gui/widgets/stacked_widget.cpp b/src/gui/widgets/stacked_widget.cpp
index 0a40e8532f1..38fc29c0895 100644
--- a/src/gui/widgets/stacked_widget.cpp
+++ b/src/gui/widgets/stacked_widget.cpp
@@ -82,14 +82,13 @@ void stacked_widget::layout_children()
 	}
 }
 
-void
-stacked_widget::finalize(std::vector<builder_grid_const_ptr> widget_builder)
+void stacked_widget::finalize(const std::vector<builder_grid>& widget_builders)
 {
 	assert(generator_);
 	string_map empty_data;
-	for(const auto & builder : widget_builder)
+	for(const auto & builder : widget_builders)
 	{
-		generator_->create_item(-1, *builder, empty_data, nullptr);
+		generator_->create_item(-1, builder, empty_data, nullptr);
 	}
 	swap_grid(nullptr, &get_grid(), generator_, "_content_grid");
 
@@ -278,7 +277,7 @@ builder_stacked_widget::builder_stacked_widget(const config& real_cfg)
 	VALIDATE(cfg.has_child("layer"), _("No stack layers defined."));
 	for(const auto & layer : cfg.child_range("layer"))
 	{
-		stack.emplace_back(std::make_shared<builder_grid>(layer));
+		stack.emplace_back(layer);
 	}
 }
 
diff --git a/src/gui/widgets/stacked_widget.hpp b/src/gui/widgets/stacked_widget.hpp
index 5a1db6e0ca5..538692bdece 100644
--- a/src/gui/widgets/stacked_widget.hpp
+++ b/src/gui/widgets/stacked_widget.hpp
@@ -123,7 +123,7 @@ private:
 	 * @param widget_builder      The builder to build the contents of the
 	 *                            widget.
 	 */
-	void finalize(std::vector<builder_grid_const_ptr> widget_builder);
+	void finalize(const std::vector<builder_grid>& widget_builders);
 
 	/**
 	 * Contains a pointer to the generator.
@@ -208,7 +208,7 @@ struct builder_stacked_widget : public builder_styled_widget
 	widget* build() const;
 
 	/** The builders for all layers of the stack .*/
-	std::vector<builder_grid_const_ptr> stack;
+	std::vector<builder_grid> stack;
 };
 
 } // namespace implementation