diff --git a/gst/rtsp-server/rtsp-client.c b/gst/rtsp-server/rtsp-client.c
index f0731dce01..ed1b663bef 100644
--- a/gst/rtsp-server/rtsp-client.c
+++ b/gst/rtsp-server/rtsp-client.c
@@ -2884,7 +2884,7 @@ gst_rtsp_client_attach (GstRTSPClient * client, GMainContext * context)
 /**
  * gst_rtsp_client_session_filter:
  * @client: a #GstRTSPClient
- * @func: (scope call): a callback
+ * @func: (scope call) (allow-none): a callback
  * @user_data: user data passed to @func
  *
  * Call @func for each session managed by @client. The result value of @func
diff --git a/gst/rtsp-server/rtsp-server.c b/gst/rtsp-server/rtsp-server.c
index ed7ba3ee22..364d5dcfea 100644
--- a/gst/rtsp-server/rtsp-server.c
+++ b/gst/rtsp-server/rtsp-server.c
@@ -1330,7 +1330,7 @@ no_source:
 /**
  * gst_rtsp_server_client_filter:
  * @server: a #GstRTSPServer
- * @func: (scope call): a callback
+ * @func: (scope call) (allow-none): a callback
  * @user_data: user data passed to @func
  *
  * Call @func for each client managed by @server. The result value of @func
diff --git a/gst/rtsp-server/rtsp-session-pool.c b/gst/rtsp-server/rtsp-session-pool.c
index 1f2b3f9210..ca4da57840 100644
--- a/gst/rtsp-server/rtsp-session-pool.c
+++ b/gst/rtsp-server/rtsp-session-pool.c
@@ -506,7 +506,7 @@ filter_func (gchar * sessionid, GstRTSPSession * sess, FilterData * data)
 /**
  * gst_rtsp_session_pool_filter:
  * @pool: a #GstRTSPSessionPool
- * @func: (scope call): a callback
+ * @func: (scope call) (allow-none): a callback
  * @user_data: user data passed to @func
  *
  * Call @func for each session in @pool. The result value of @func determines
diff --git a/gst/rtsp-server/rtsp-session.c b/gst/rtsp-server/rtsp-session.c
index c20cf3cd0e..204ccf78f7 100644
--- a/gst/rtsp-server/rtsp-session.c
+++ b/gst/rtsp-server/rtsp-session.c
@@ -311,7 +311,7 @@ gst_rtsp_session_get_media (GstRTSPSession * sess, const gchar * path,
 /**
  * gst_rtsp_session_filter:
  * @sess: a #GstRTSPSession
- * @func: (scope call): a callback
+ * @func: (scope call) (allow-none): a callback
  * @user_data: user data passed to @func
  *
  * Call @func for each media in @sess. The result value of @func determines
diff --git a/gst/rtsp-server/rtsp-stream.c b/gst/rtsp-server/rtsp-stream.c
index 6e9218df80..7df201b19c 100644
--- a/gst/rtsp-server/rtsp-stream.c
+++ b/gst/rtsp-server/rtsp-stream.c
@@ -2068,7 +2068,7 @@ gst_rtsp_stream_get_rtcp_socket (GstRTSPStream * stream, GSocketFamily family)
 /**
  * gst_rtsp_stream_transport_filter:
  * @stream: a #GstRTSPStream
- * @func: (scope call): a callback
+ * @func: (scope call) (allow-none): a callback
  * @user_data: user data passed to @func
  *
  * Call @func for each transport managed by @stream. The result value of @func