diff --git a/client/mysqldump.c b/client/mysqldump.c
index 66f0c2801f5..c2d526edd4e 100644
--- a/client/mysqldump.c
+++ b/client/mysqldump.c
@@ -1153,6 +1153,9 @@ static int switch_db_collation(FILE *sql_file,
 {
   if (strcmp(current_db_cl_name, required_db_cl_name) != 0)
   {
+    char quoted_db_buf[NAME_LEN * 2 + 3];
+    char *quoted_db_name= quote_name(db_name, quoted_db_buf, FALSE);
+
     CHARSET_INFO *db_cl= get_charset_by_name(required_db_cl_name, MYF(0));
 
     if (!db_cl)
@@ -1160,7 +1163,7 @@ static int switch_db_collation(FILE *sql_file,
 
     fprintf(sql_file,
             "ALTER DATABASE %s CHARACTER SET %s COLLATE %s %s\n",
-            (const char *) db_name,
+            (const char *) quoted_db_name,
             (const char *) db_cl->csname,
             (const char *) db_cl->name,
             (const char *) delimiter);
@@ -1181,6 +1184,9 @@ static int restore_db_collation(FILE *sql_file,
                                 const char *delimiter,
                                 const char *db_cl_name)
 {
+  char quoted_db_buf[NAME_LEN * 2 + 3];
+  char *quoted_db_name= quote_name(db_name, quoted_db_buf, FALSE);
+
   CHARSET_INFO *db_cl= get_charset_by_name(db_cl_name, MYF(0));
 
   if (!db_cl)
@@ -1188,7 +1194,7 @@ static int restore_db_collation(FILE *sql_file,
 
   fprintf(sql_file,
           "ALTER DATABASE %s CHARACTER SET %s COLLATE %s %s\n",
-          (const char *) db_name,
+          (const char *) quoted_db_name,
           (const char *) db_cl->csname,
           (const char *) db_cl->name,
           (const char *) delimiter);
diff --git a/mysql-test/r/mysqldump.result b/mysql-test/r/mysqldump.result
index dd3ea5e9716..8972b12abb9 100644
--- a/mysql-test/r/mysqldump.result
+++ b/mysql-test/r/mysqldump.result
@@ -4591,5 +4591,41 @@ CREATE TABLE `comment_table` (i INT COMMENT 'FIELD COMMENT') COMMENT = 'TABLE CO
 </mysqldump>
 DROP TABLE `comment_table`;
 #
+# BUG#11766310 : 59398: MYSQLDUMP 5.1 CAN'T HANDLE A DASH ("-") IN
+#                DATABASE NAMES IN ALTER DATABASE
+#
+CREATE DATABASE `test-database`;
+USE `test-database`;
+CREATE TABLE `test` (`c1` VARCHAR(10)) ENGINE=MYISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+CREATE TRIGGER `trig` BEFORE INSERT ON `test` FOR EACH ROW BEGIN
+END |
+ALTER DATABASE `test-database` CHARACTER SET latin1 COLLATE latin1_swedish_ci;
+ALTER DATABASE `test-database` CHARACTER SET utf8 COLLATE utf8_unicode_ci ;
+/*!40101 SET @saved_cs_client     = @@character_set_client */;
+/*!40101 SET character_set_client = utf8 */;
+CREATE TABLE `test` (
+  `c1` varchar(10) COLLATE utf8_unicode_ci DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+/*!40101 SET character_set_client = @saved_cs_client */;
+ALTER DATABASE `test-database` CHARACTER SET latin1 COLLATE latin1_swedish_ci ;
+/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
+/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
+/*!50003 SET @saved_col_connection = @@collation_connection */ ;
+/*!50003 SET character_set_client  = latin1 */ ;
+/*!50003 SET character_set_results = latin1 */ ;
+/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
+/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
+/*!50003 SET sql_mode              = '' */ ;
+DELIMITER ;;
+/*!50003 CREATE*/ /*!50017 DEFINER=`root`@`localhost`*/ /*!50003 TRIGGER `trig` BEFORE INSERT ON `test` FOR EACH ROW BEGIN
+END */;;
+DELIMITER ;
+/*!50003 SET sql_mode              = @saved_sql_mode */ ;
+/*!50003 SET character_set_client  = @saved_cs_client */ ;
+/*!50003 SET character_set_results = @saved_cs_results */ ;
+/*!50003 SET collation_connection  = @saved_col_connection */ ;
+ALTER DATABASE `test-database` CHARACTER SET utf8 COLLATE utf8_unicode_ci ;
+DROP DATABASE `test-database`;
+#
 # End of 5.1 tests
 #
diff --git a/mysql-test/t/mysqldump.test b/mysql-test/t/mysqldump.test
index 8ffa2e164cd..44245eb9d44 100644
--- a/mysql-test/t/mysqldump.test
+++ b/mysql-test/t/mysqldump.test
@@ -2178,6 +2178,27 @@ CREATE TABLE `comment_table` (i INT COMMENT 'FIELD COMMENT') COMMENT = 'TABLE CO
 --exec $MYSQL_DUMP --compact --skip-create --xml test
 DROP TABLE `comment_table`;
 
+--echo #
+--echo # BUG#11766310 : 59398: MYSQLDUMP 5.1 CAN'T HANDLE A DASH ("-") IN
+--echo #                DATABASE NAMES IN ALTER DATABASE
+--echo #
+
+CREATE DATABASE `test-database`;
+USE `test-database`;
+CREATE TABLE `test` (`c1` VARCHAR(10)) ENGINE=MYISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+
+DELIMITER |;
+CREATE TRIGGER `trig` BEFORE INSERT ON `test` FOR EACH ROW BEGIN
+END |
+DELIMITER ;|
+
+ALTER DATABASE `test-database` CHARACTER SET latin1 COLLATE latin1_swedish_ci;
+ALTER DATABASE `test-database` CHARACTER SET utf8 COLLATE utf8_unicode_ci ;
+
+--exec $MYSQL_DUMP --quote-names --compact test-database
+
+DROP DATABASE `test-database`;
+
 --echo #
 --echo # End of 5.1 tests
 --echo #