diff --git a/config.example.json b/config.example.json
index 37e7ed3..343afa8 100644
--- a/config.example.json
+++ b/config.example.json
@@ -5,7 +5,7 @@
   },
   "namespaces": {
     "dns": {
-      "primaries": [
+      "masters": [
         {
           "name": "ns1.example.com",
           "ip": "192.168.0.1",
@@ -27,7 +27,7 @@
               ]
             }
           ],
-          "additional_secondaries": {
+          "additional_slaves": {
             "f.f.f.f.f.f.f.f.f.f.f.f.ip6.arpa": [
               "ffff:fff:fff::21",
               "ffff:fff:fff::22"
diff --git a/config/config_reader.go b/config/config_reader.go
index 79ca9b4..e75b893 100644
--- a/config/config_reader.go
+++ b/config/config_reader.go
@@ -25,11 +25,11 @@ type PrimaryConfig struct {
 	Zones                 []string                    `json:"zones"`
 	DnssecZones           []string                    `json:"dnssec_zones"`
 	Includes              []ZoneInclude               `json:"includes"`
-	AdditionalSecondaries AdditionalSecondariesConfig `json:"additional_secondaries"`
+	AdditionalSecondaries AdditionalSecondariesConfig `json:"additional_slaves"`
 }
 
 type DNSNamespaceConfig struct {
-	Primaries []PrimaryConfig `json:"primaries"`
+	Primaries []PrimaryConfig `json:"masters"`
 }
 
 type NamespaceConfig struct {