diff --git a/gstreamer-rtsp-server/Gir.toml b/gstreamer-rtsp-server/Gir.toml
index 3f0d85ca8..4cdd27dbb 100644
--- a/gstreamer-rtsp-server/Gir.toml
+++ b/gstreamer-rtsp-server/Gir.toml
@@ -181,6 +181,15 @@ name = "GstRtspServer.RTSPContext"
 status = "manual"
 ref_mode = "ref"
 
+[[object]]
+name = "GstRtspServer.RTSPOnvifMediaFactory"
+status = "generate"
+manual_traits = ["RTSPMediaExtManual"]
+    [[object.function]]
+    name = "requires_backchannel"
+    # on extension trait
+    manual = true
+
 [[object]]
 name = "GstRtspServer.RTSPMedia"
 status = "generate"