diff --git a/mod/chat/db/mysql.php b/mod/chat/db/mysql.php
index 2766c6efec3..965d4a30196 100644
--- a/mod/chat/db/mysql.php
+++ b/mod/chat/db/mysql.php
@@ -37,7 +37,7 @@ function chat_upgrade($oldversion) {
         modify_database("", "INSERT INTO prefix_log_display VALUES ('chat', 'talk', 'chat', 'name');");
     }
 
-    if ($oldversion < 2004111200) {
+    if ($oldversion < 2004060401) {
         modify_database('','ALTER TABLE prefix_chat ADD INDEX `course` (`course`);');
         modify_database('','ALTER TABLE prefix_chat_messages ADD INDEX  `chatid` (`chatid`);');
         modify_database('','ALTER TABLE prefix_chat_messages ADD INDEX `userid` (`userid`);');
diff --git a/mod/chat/db/postgres7.php b/mod/chat/db/postgres7.php
index e9c24455409..97418c1240d 100644
--- a/mod/chat/db/postgres7.php
+++ b/mod/chat/db/postgres7.php
@@ -20,7 +20,7 @@ function chat_upgrade($oldversion) {
         modify_database("", "INSERT INTO prefix_log_display VALUES ('chat', 'talk', 'chat', 'name');");
     }
 
-    if ($oldversion < 2004111200) {
+    if ($oldversion < 2004060401) {
         modify_database('','CREATE INDEX prefix_chat_course_idx ON prefix_chat(course);');
         modify_database('','CREATE INDEX prefix_chat_messages_chatid_idx ON prefix_chat_messages (chatid);');
         modify_database('','CREATE INDEX prefix_chat_messages_userid_idx ON prefix_chat_messages (userid);');
diff --git a/mod/chat/version.php b/mod/chat/version.php
index 9b36d9acb82..970df5c4cfa 100644
--- a/mod/chat/version.php
+++ b/mod/chat/version.php
@@ -5,7 +5,7 @@
 ///  This fragment is called by moodle_needs_upgrading() and /admin/index.php
 /////////////////////////////////////////////////////////////////////////////////
 
-$module->version  = 2004121100;   // The (date) version of this module
+$module->version  = 2004060401;   // The (date) version of this module
 $module->requires = 2004052505;  // Requires this Moodle version
 $module->cron     = 300;          // How often should cron check this module (seconds)?