diff --git a/libnm-core/nm-setting-sriov.c b/libnm-core/nm-setting-sriov.c
index 0625331e3f..eb5d1951e4 100644
--- a/libnm-core/nm-setting-sriov.c
+++ b/libnm-core/nm-setting-sriov.c
@@ -559,7 +559,7 @@ vlan_id_compare (gconstpointer a, gconstpointer b, gpointer user_data)
  *
  * Returns the VLANs currently configured on the VF.
  *
- * Returns: (transfer none): a list of VLAN ids configured on the VF.
+ * Returns: (transfer none) (array length=length): a list of VLAN ids configured on the VF.
  *
  * Since: 1.14
  */