diff --git a/doc/api/subnet6-del.json b/doc/api/subnet6-del.json
index 3ce5e70096..d95e48828c 100644
--- a/doc/api/subnet6-del.json
+++ b/doc/api/subnet6-del.json
@@ -2,7 +2,7 @@
     "name": "subnet6-del",
     "brief": "This command is used to remove a subnet from the server's configuration. This command has no effect on other configured subnets but removing a subnet has certain implications which the server's administrator should be aware of.",
     "description": "See <xref linkend=\"idp72\"/>",
-    "support": [ "kea-dhcp4", "kea-dhcp6" ],
+    "support": [ "kea-dhcp6" ],
     "avail": "1.3.0",
     "hook": "subnet_cmds",
     "cmd-syntax": "{