diff --git a/doc/examples/ddns/sample1.json b/doc/examples/ddns/sample1.json
index 9a61fb9800..dc179ba99a 100644
--- a/doc/examples/ddns/sample1.json
+++ b/doc/examples/ddns/sample1.json
@@ -105,7 +105,7 @@
             "name": "d2.sha1.key",
             "algorithm": "HMAC-SHA1",
             "secret": "hRrp29wzUv3uzSNRLlY68w=="
-        }
+        },
         {
             "name": "d2.sha512.key",
             "algorithm": "HMAC-SHA512",
diff --git a/doc/examples/kea4/multiple-options.json b/doc/examples/kea4/multiple-options.json
index 6dbd9c789d..817369b28c 100644
--- a/doc/examples/kea4/multiple-options.json
+++ b/doc/examples/kea4/multiple-options.json
@@ -5,7 +5,7 @@
 
 {
 # Kea is told to listen on ethX interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea4/reservations.json b/doc/examples/kea4/reservations.json
index 30d0e8df70..954d84a48f 100644
--- a/doc/examples/kea4/reservations.json
+++ b/doc/examples/kea4/reservations.json
@@ -5,7 +5,7 @@
 
 {
 # Kea is told to listen on ethX interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea4/several-subnets.json b/doc/examples/kea4/several-subnets.json
index 2f2ecfb488..24d5719cea 100644
--- a/doc/examples/kea4/several-subnets.json
+++ b/doc/examples/kea4/several-subnets.json
@@ -6,7 +6,7 @@
 
 {
 # Kea is told to listen on ethX interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea4/single-subnet.json b/doc/examples/kea4/single-subnet.json
index bc6f1d8288..385a2dda6b 100644
--- a/doc/examples/kea4/single-subnet.json
+++ b/doc/examples/kea4/single-subnet.json
@@ -6,7 +6,7 @@
 
 {
 # Kea is told to listen on ethX interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea6/advanced.json b/doc/examples/kea6/advanced.json
index 7652b4e91a..9aaa947617 100644
--- a/doc/examples/kea6/advanced.json
+++ b/doc/examples/kea6/advanced.json
@@ -11,7 +11,7 @@
 
 {
 # Kea is told to listen on ethX network interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea6/multiple-options.json b/doc/examples/kea6/multiple-options.json
index 436816ac29..017dfa62ae 100644
--- a/doc/examples/kea6/multiple-options.json
+++ b/doc/examples/kea6/multiple-options.json
@@ -5,7 +5,7 @@
 
 {
 # Kea is told to listen on ethX interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea6/reservations.json b/doc/examples/kea6/reservations.json
index c34244e8f6..6162fc1730 100644
--- a/doc/examples/kea6/reservations.json
+++ b/doc/examples/kea6/reservations.json
@@ -8,7 +8,9 @@
 
 {
 # Kea is told to listen on ethX interface only.
-  "interfaces": [ "ethX" ],
+  "interfaces-config": {
+    "interfaces": [ "ethX" ]
+  },
 
 # We need to specify lease type. As of May 2014, three backends are supported:
 # memfile, mysql and pgsql. We'll just use memfile, because it doesn't require
diff --git a/doc/examples/kea6/several-subnets.json b/doc/examples/kea6/several-subnets.json
index 3be0b0bd02..25ac240e22 100644
--- a/doc/examples/kea6/several-subnets.json
+++ b/doc/examples/kea6/several-subnets.json
@@ -6,7 +6,7 @@
 
 {
 # Kea is told to listen on ethX interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea6/simple.json b/doc/examples/kea6/simple.json
index 31c3f52709..f9cda446a7 100644
--- a/doc/examples/kea6/simple.json
+++ b/doc/examples/kea6/simple.json
@@ -7,7 +7,7 @@
 
 { 
 # Kea is told to listen on ethX interface only.
-  "interfaces-config:" {
+  "interfaces-config": {
     "interfaces": [ "ethX" ]
   },
 
diff --git a/doc/examples/kea6/stateless.json b/doc/examples/kea6/stateless.json
index f33ea815b4..b16d018c4a 100644
--- a/doc/examples/kea6/stateless.json
+++ b/doc/examples/kea6/stateless.json
@@ -7,7 +7,7 @@
 
 {
 "Dhcp6": {
-    "interfaces-config:" {
+    "interfaces-config": {
         "interfaces": [ "ethX" ]
     },