diff --git a/src/bin/keactrl/kea-dhcp4.conf.pre b/src/bin/keactrl/kea-dhcp4.conf.pre
index 55af9dbf61..bf768871b4 100644
--- a/src/bin/keactrl/kea-dhcp4.conf.pre
+++ b/src/bin/keactrl/kea-dhcp4.conf.pre
@@ -142,7 +142,7 @@
         // {
         //     "name": "domain-name-servers",
         //     "code": 6,
-        //     "csv-format": "true",
+        //     "csv-format": true,
         //     "space": "dhcp4",
         //     "data": "192.0.2.1, 192.0.2.2"
         // }
diff --git a/src/bin/keactrl/kea-dhcp6.conf.pre b/src/bin/keactrl/kea-dhcp6.conf.pre
index 271021b2f8..1b13678cc5 100644
--- a/src/bin/keactrl/kea-dhcp6.conf.pre
+++ b/src/bin/keactrl/kea-dhcp6.conf.pre
@@ -130,7 +130,7 @@
         // {
         //     "name": "dns-servers",
         //     "code": 23,
-        //     "csv-format": "true",
+        //     "csv-format": true,
         //     "space": "dhcp6",
         //     "data": "2001:db8:2::45, 2001:db8:2::100"
         // }