protection: Fix the string to define unspecified system id

[platform/upstream/gstreamer.git] / gst / gstparamspecs.c

diff --git a/gst/gstparamspecs.c b/gst/gstparamspecs.c
index a41cc8e..7de51d7 100644 (file)
--- a/gst/gstparamspecs.c
+++ b/gst/gstparamspecs.c
@@ -164,7 +164,7 @@ gst_param_spec_fraction_get_type (void)
  * used in connection with g_object_class_install_property() in a GObjects's
  * instance_init function.
  *
- * Returns: (transfer full): a newly created parameter specification
+ * Returns: (transfer full) (nullable): a newly created parameter specification
  */
 GParamSpec *
 gst_param_spec_fraction (const gchar * name, const gchar * nick,