diff --git a/lib/dbus-display1.xml b/lib/dbus-display1.xml
index c3b2293..c98a143 100644
--- a/lib/dbus-display1.xml
+++ b/lib/dbus-display1.xml
@@ -56,6 +56,7 @@
         :dbus:iface:`org.qemu.Display1.Listener` interface.
     -->
     <method name="RegisterListener">
+      <annotation name="org.gtk.GDBus.C.UnixFD" value="true"/>
       <arg type="h" name="listener" direction="in"/>
     </method>
 
@@ -306,6 +307,7 @@
         Resize and update the display content with a DMABUF.
     -->
     <method name="ScanoutDMABUF">
+      <annotation name="org.gtk.GDBus.C.UnixFD" value="true"/>
       <arg type="h" name="dmabuf" direction="in"/>
       <arg type="u" name="width" direction="in"/>
       <arg type="u" name="height" direction="in"/>