diff --git a/mysql-test/r/ctype_utf8.result b/mysql-test/r/ctype_utf8.result
index 00e8dbf9cb7..934f56877ac 100644
--- a/mysql-test/r/ctype_utf8.result
+++ b/mysql-test/r/ctype_utf8.result
@@ -1225,6 +1225,62 @@ a
 Käli Käli 2-4
 Käli Käli 2-4
 DROP TABLE t1;
+SET NAMES latin2;
+CREATE TABLE t1 (
+id int(11) NOT NULL default '0',
+tid int(11) NOT NULL default '0',
+val text NOT NULL,
+INDEX idx(tid, val(10))
+) ENGINE=MyISAM DEFAULT CHARSET=utf8;
+INSERT INTO t1 VALUES
+(40988,72,'VOLNÝ ADSL'),(41009,72,'VOLNÝ ADSL'),
+(41032,72,'VOLNÝ ADSL'),(41038,72,'VOLNÝ ADSL'),
+(41063,72,'VOLNÝ ADSL'),(41537,72,'VOLNÝ ADSL Office'),
+(42141,72,'VOLNÝ ADSL'),(42565,72,'VOLNÝ ADSL Combi'),
+(42749,72,'VOLNÝ ADSL'),(44205,72,'VOLNÝ ADSL');
+SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLNY ADSL';
+id	tid	val
+40988	72	VOLNÝ ADSL
+41009	72	VOLNÝ ADSL
+41032	72	VOLNÝ ADSL
+41038	72	VOLNÝ ADSL
+41063	72	VOLNÝ ADSL
+42141	72	VOLNÝ ADSL
+42749	72	VOLNÝ ADSL
+44205	72	VOLNÝ ADSL
+SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLNÝ ADSL';
+id	tid	val
+40988	72	VOLNÝ ADSL
+41009	72	VOLNÝ ADSL
+41032	72	VOLNÝ ADSL
+41038	72	VOLNÝ ADSL
+41063	72	VOLNÝ ADSL
+42141	72	VOLNÝ ADSL
+42749	72	VOLNÝ ADSL
+44205	72	VOLNÝ ADSL
+SELECT * FROM t1 WHERE tid=72 and val LIKE '%VOLNÝ ADSL';
+id	tid	val
+40988	72	VOLNÝ ADSL
+41009	72	VOLNÝ ADSL
+41032	72	VOLNÝ ADSL
+41038	72	VOLNÝ ADSL
+41063	72	VOLNÝ ADSL
+42141	72	VOLNÝ ADSL
+42749	72	VOLNÝ ADSL
+44205	72	VOLNÝ ADSL
+ALTER TABLE t1 DROP KEY idx;
+ALTER TABLE t1 ADD KEY idx (tid,val(11));
+SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLNÝ ADSL';
+id	tid	val
+40988	72	VOLNÝ ADSL
+41009	72	VOLNÝ ADSL
+41032	72	VOLNÝ ADSL
+41038	72	VOLNÝ ADSL
+41063	72	VOLNÝ ADSL
+42141	72	VOLNÝ ADSL
+42749	72	VOLNÝ ADSL
+44205	72	VOLNÝ ADSL
+DROP TABLE t1;
 CREATE TABLE t1(id varchar(20) NOT NULL) DEFAULT CHARSET=utf8;
 INSERT INTO t1 VALUES ('xxx'), ('aa'), ('yyy'), ('aa');
 SELECT id FROM t1;
diff --git a/mysql-test/t/ctype_utf8.test b/mysql-test/t/ctype_utf8.test
index 9de71415078..77b76a14171 100644
--- a/mysql-test/t/ctype_utf8.test
+++ b/mysql-test/t/ctype_utf8.test
@@ -995,6 +995,37 @@ ALTER TABLE t1 ADD KEY (a(10));
 SELECT * FROM t1 WHERE a LIKE 'Käli Käli 2%';
 DROP TABLE t1;
 
+#
+# Bug#18359: LIKE predicate for a 'utf8' text column with a partial index
+#            (see bug #16674 as well)
+#
+
+SET NAMES latin2;
+
+CREATE TABLE t1 (
+  id int(11) NOT NULL default '0',
+  tid int(11) NOT NULL default '0',
+  val text NOT NULL,
+  INDEX idx(tid, val(10))
+) ENGINE=MyISAM DEFAULT CHARSET=utf8;
+
+INSERT INTO t1 VALUES
+  (40988,72,'VOLNÝ ADSL'),(41009,72,'VOLNÝ ADSL'),
+  (41032,72,'VOLNÝ ADSL'),(41038,72,'VOLNÝ ADSL'),
+  (41063,72,'VOLNÝ ADSL'),(41537,72,'VOLNÝ ADSL Office'),
+  (42141,72,'VOLNÝ ADSL'),(42565,72,'VOLNÝ ADSL Combi'),
+  (42749,72,'VOLNÝ ADSL'),(44205,72,'VOLNÝ ADSL');
+
+SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLNY ADSL'; 
+SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLNÝ ADSL'; 
+SELECT * FROM t1 WHERE tid=72 and val LIKE '%VOLNÝ ADSL'; 
+
+ALTER TABLE t1 DROP KEY idx;
+ALTER TABLE t1 ADD KEY idx (tid,val(11));
+
+SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLNÝ ADSL'; 
+
+DROP TABLE t1;
 # End of 4.1 tests
 
 #