diff --git a/gtk/Gtk.metadata b/gtk/Gtk.metadata
index 13938e321..daeb9e376 100644
--- a/gtk/Gtk.metadata
+++ b/gtk/Gtk.metadata
@@ -704,6 +704,7 @@
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='GetModifierStyle']" name="needs_ref">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='GetParentWindow']" name="needs_ref">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='GetPath']" name="name">GetWidgetPath</attr>
+  <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='GetPreferredSize']/*/*[@type='GtkRequisition*']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='GetRealized']" name="name">GetIsRealized</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='GetRequisition']/*/parameter[@name='requisition']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='GetStyle']" name="needs_ref">1</attr>