diff --git a/fullDB/wordfilter_character_names.sql b/fullDB/wordfilter_character_names.sql
index d09cbfa..9521bab 100644
--- a/fullDB/wordfilter_character_names.sql
+++ b/fullDB/wordfilter_character_names.sql
@@ -5,8 +5,8 @@
 /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
 
 CREATE TABLE IF NOT EXISTS `wordfilter_character_names` (
-  `regex_match` varchar(500) NOT NULL,
-  `regex_ignore_if_matched` varchar(500) NOT NULL DEFAULT '',
+  `regex_match` varchar(300) NOT NULL,
+  `regex_ignore_if_matched` varchar(300) NOT NULL DEFAULT '',
   PRIMARY KEY (`regex_match`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci COMMENT='Wordfilter System';
 
diff --git a/fullDB/wordfilter_chat.sql b/fullDB/wordfilter_chat.sql
index 0cc6d85..8cd6fe5 100644
--- a/fullDB/wordfilter_chat.sql
+++ b/fullDB/wordfilter_chat.sql
@@ -5,8 +5,8 @@
 /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
 
 CREATE TABLE IF NOT EXISTS `wordfilter_chat` (
-  `regex_match` varchar(500) NOT NULL,
-  `regex_ignore_if_matched` varchar(500) NOT NULL DEFAULT '',
+  `regex_match` varchar(300) NOT NULL,
+  `regex_ignore_if_matched` varchar(300) NOT NULL DEFAULT '',
   PRIMARY KEY (`regex_match`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci COMMENT='Wordfilter System';
 
diff --git a/updates/20191114-00_wordfilter.sql b/updates/20191114-00_wordfilter.sql
new file mode 100644
index 0000000..33cb1b9
--- /dev/null
+++ b/updates/20191114-00_wordfilter.sql
@@ -0,0 +1,9 @@
+/*
+Length of index should not be more than 1000 bytes to avoid "Specified key was too long; max key length is 1000 bytes" error.
+*/
+
+ALTER TABLE `wordfilter_character_names` MODIFY `regex_match` varchar(300);
+ALTER TABLE `wordfilter_character_names` MODIFY `regex_ignore_if_matched` varchar(300);
+ALTER TABLE `wordfilter_chat` MODIFY `regex_match` varchar(300);
+ALTER TABLE `wordfilter_chat` MODIFY `regex_ignore_if_matched` varchar(300);
+