diff --git a/mysql-test/r/check_constraint.result b/mysql-test/r/check_constraint.result
index a9e8b1138e99a..5a1afd64e5b8f 100644
--- a/mysql-test/r/check_constraint.result
+++ b/mysql-test/r/check_constraint.result
@@ -95,3 +95,36 @@ t2	CREATE TABLE `t2` (
   CONSTRAINT `CONSTRAINT_1` CHECK (a+b+c < 500)
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1,t2;
+create or replace table t1 (a int, b int, constraint check (a>b));
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL,
+  CONSTRAINT `CONSTRAINT_1` CHECK (a>b)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+create or replace table t1 (a int, b int,
+constraint CONSTRAINT_1 check (a>1),
+constraint check (b>1));
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL,
+  CONSTRAINT `CONSTRAINT_1` CHECK (a>1),
+  CONSTRAINT `CONSTRAINT_2` CHECK (b>1)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+create or replace table t1 (a int, b int,
+constraint CONSTRAINT_1 check (a>1),
+constraint check (b>1),
+constraint CONSTRAINT_2 check (a>b));
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL,
+  CONSTRAINT `CONSTRAINT_1` CHECK (a>1),
+  CONSTRAINT `CONSTRAINT_3` CHECK (b>1),
+  CONSTRAINT `CONSTRAINT_2` CHECK (a>b)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;
diff --git a/mysql-test/t/check_constraint.test b/mysql-test/t/check_constraint.test
index 45b85436ec483..7bd6a654e9b4a 100644
--- a/mysql-test/t/check_constraint.test
+++ b/mysql-test/t/check_constraint.test
@@ -52,3 +52,19 @@ alter table t2 drop constraint min;
 show create table t2;
 
 drop table t1,t2;
+
+#
+# check constraint name auto-generation:
+#
+create or replace table t1 (a int, b int, constraint check (a>b));
+show create table t1;
+create or replace table t1 (a int, b int,
+  constraint CONSTRAINT_1 check (a>1),
+  constraint check (b>1));
+show create table t1;
+create or replace table t1 (a int, b int,
+  constraint CONSTRAINT_1 check (a>1),
+  constraint check (b>1),
+  constraint CONSTRAINT_2 check (a>b));
+show create table t1;
+drop table t1;
diff --git a/mysql-test/t/constraints.test b/mysql-test/t/constraints.test
index e24039cc2ac40..1997c23bfa9f0 100644
--- a/mysql-test/t/constraints.test
+++ b/mysql-test/t/constraints.test
@@ -1,6 +1,5 @@
 #
 # Testing of constraints
-# Currently MySQL only ignores the syntax.
 #
 --disable_warnings
 drop table if exists t1;