diff --git a/CHANGES b/CHANGES
index b9729b6d52..b5a50e4184 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+3312.	[bug]		named-checkconf didn't detect a bad dns64 clients acl.
+			[RT #27631]
+
 3311.	[bug]		Abort the zone dump if zone->db is NULL in
 			zone.c:zone_gotwritehandle. [RT #29028]
 
diff --git a/bin/tests/system/dns64/conf/bad7.conf b/bin/tests/system/dns64/conf/bad7.conf
new file mode 100644
index 0000000000..c3854ed315
--- /dev/null
+++ b/bin/tests/system/dns64/conf/bad7.conf
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id:$ */
+
+options {
+	dns64 FC36:EAFE:F993::/64 {
+		exclude { bogusacl; };
+	};
+};
diff --git a/bin/tests/system/dns64/conf/bad8.conf b/bin/tests/system/dns64/conf/bad8.conf
new file mode 100644
index 0000000000..7b747eeac9
--- /dev/null
+++ b/bin/tests/system/dns64/conf/bad8.conf
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id:$ */
+
+options {
+	dns64 FC36:EAFE:F993::/64 {
+		clients { bogusacl; };
+	};
+};
diff --git a/bin/tests/system/dns64/conf/bad9.conf b/bin/tests/system/dns64/conf/bad9.conf
new file mode 100644
index 0000000000..262b5b95c2
--- /dev/null
+++ b/bin/tests/system/dns64/conf/bad9.conf
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id:$ */
+
+options {
+	dns64 FC36:EAFE:F993::/64 {
+		mapped { bogusacl; };
+	};
+};
diff --git a/lib/bind9/check.c b/lib/bind9/check.c
index af01ce09e3..08d393ec0d 100644
--- a/lib/bind9/check.c
+++ b/lib/bind9/check.c
@@ -434,7 +434,7 @@ check_dns64(cfg_aclconfctx_t *actx, const cfg_obj_t *voptions,
 	int nbytes;
 	int i;
 
-	static const char *acls[] = { "client", "exclude", "mapped", NULL};
+	static const char *acls[] = { "clients", "exclude", "mapped", NULL};
 
 	if (voptions != NULL)
 		cfg_map_get(voptions, "dns64", &dns64);