diff --git a/libnm-core/nm-core-internal.h b/libnm-core/nm-core-internal.h
index 1fa8ac5de6..e2cdd56e6a 100644
--- a/libnm-core/nm-core-internal.h
+++ b/libnm-core/nm-core-internal.h
@@ -443,6 +443,9 @@ gboolean    _nm_utils_dns_option_validate (const char *option, char **out_name,
                                            const NMUtilsDNSOptionDesc *option_descs);
 gssize      _nm_utils_dns_option_find_idx (GPtrArray *array, const char *option);
 
+int nm_setting_ip_config_next_valid_dns_option (NMSettingIPConfig *setting,
+                                                guint              idx);
+
 /*****************************************************************************/
 
 typedef struct _NMUtilsStrStrDictKey NMUtilsStrStrDictKey;
diff --git a/libnm-core/nm-setting-ip-config.c b/libnm-core/nm-setting-ip-config.c
index 4a8b4a6cc0..d5aa8b08bc 100644
--- a/libnm-core/nm-setting-ip-config.c
+++ b/libnm-core/nm-setting-ip-config.c
@@ -3998,8 +3998,6 @@ nm_setting_ip_config_get_dns_option (NMSettingIPConfig *setting, guint idx)
  *
  * Returns: the index, greater or equal than @idx, of the first valid
  * DNS option, or -1 if no valid option is found
- *
- * Since: 1.2
  **/
 int
 nm_setting_ip_config_next_valid_dns_option (NMSettingIPConfig *setting, guint idx)
diff --git a/libnm-core/nm-setting-ip-config.h b/libnm-core/nm-setting-ip-config.h
index 4a5223673b..80c609ce01 100644
--- a/libnm-core/nm-setting-ip-config.h
+++ b/libnm-core/nm-setting-ip-config.h
@@ -402,8 +402,6 @@ guint         nm_setting_ip_config_get_num_dns_options        (NMSettingIPConfig
 gboolean      nm_setting_ip_config_has_dns_options            (NMSettingIPConfig *setting);
 const char   *nm_setting_ip_config_get_dns_option             (NMSettingIPConfig *setting,
                                                                guint              idx);
-int           nm_setting_ip_config_next_valid_dns_option      (NMSettingIPConfig *setting,
-                                                               guint              idx);
 gboolean      nm_setting_ip_config_add_dns_option             (NMSettingIPConfig *setting,
                                                                const char        *dns_option);
 void          nm_setting_ip_config_remove_dns_option          (NMSettingIPConfig *setting,