diff --git a/netjsonconfig/backends/openwrt/converters/ddns.py b/netjsonconfig/backends/openwrt/converters/ddns.py
index f87c06868..1f5f530a1 100644
--- a/netjsonconfig/backends/openwrt/converters/ddns.py
+++ b/netjsonconfig/backends/openwrt/converters/ddns.py
@@ -31,8 +31,7 @@ def __intermediate_providers(self, providers):
             uci_name = self._get_uci_name(provider['lookup_host'])
             resultdict = OrderedDict((('.name', uci_name),
                                       ('.type', 'service')))
-            for key, value in provider.items():
-                resultdict[key] = value
+            resultdict.update(provider)
             result.append(resultdict)
         return result
 
diff --git a/tests/openwrt/test_ddns.py b/tests/openwrt/test_ddns.py
new file mode 100644
index 000000000..babf31dbe
--- /dev/null
+++ b/tests/openwrt/test_ddns.py
@@ -0,0 +1,37 @@
+import unittest
+
+from netjsonconfig import OpenWrt
+from netjsonconfig.utils import _TabsMixin
+
+
+class TestDdns(unittest.TestCase, _TabsMixin):
+    maxDiff = None
+    _ddns_netjson_global = {
+        "ddns": {
+            "ddns_dateformat": "%F %R",
+            "ddns_logdir": "/var/log/ddns",
+            "ddns_loglines": 250,
+            "ddns_rundir": "/var/run/ddns",
+            "upd_privateip": False,
+            "use_curl": False
+        }
+    }
+    _ddns_uci_global = """package ddns
+
+config ddns 'global'
+    option ddns_dateformat '%F %R'
+    option ddns_logdir '/var/log/ddns'
+    option ddns_loglines '250'
+    option ddns_rundir '/var/run/ddns'
+    option upd_privateip '0'
+    option use_curl '0'
+"""
+
+    def test_render_ddns_global(self):
+        o = OpenWrt(self._ddns_netjson_global)
+        expected = self._tabs(self._ddns_uci_global)
+        self.assertEqual(o.render(), expected)
+
+    def test_parse_ddns_global(self):
+        o = OpenWrt(native=self._ddns_uci_global)
+        self.assertDictEqual(o.config, self._ddns_netjson_global)