diff --git a/Source/Libs/GdkSharp/GdkSharp.metadata b/Source/Libs/GdkSharp/GdkSharp.metadata
index c1ac95520..a10361cd9 100644
--- a/Source/Libs/GdkSharp/GdkSharp.metadata
+++ b/Source/Libs/GdkSharp/GdkSharp.metadata
@@ -13,6 +13,7 @@
   <attr path="/api/namespace/callback[@cname='GdkPixbufDestroyNotify']/*/*[@type='guchar*']" name="array">1</attr>
   <attr path="/api/namespace/class[@cname='GdkCairo_']" name="name">CairoHelper</attr>
   <attr path="/api/namespace/class[@cname='GdkCairo_']/method[@name='Create']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/class[@cname='GdkCairo_']/method[@name='GetClipRectangle']/parameters/parameter[@name='rect']" name="pass_as">out</attr>
   <attr path="/api/namespace/class[@cname='GdkDrag_']/method[@name='Begin']" name="hidden">1</attr>
   <attr path="/api/namespace/class[@cname='GdkDrag_']/method[@name='FindWindowForScreen']/*/*[@name='dest_window']" name="pass_as">out</attr>
   <attr path="/api/namespace/class[@cname='GdkEvent_']/method[@name='HandlerSet']" name="hidden">1</attr>