diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index 779a41ea2a4..a89e7a72a29 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -2874,5 +2874,15 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2018120300.01);
     }
 
+    if ($oldversion < 2018120300.02) {
+        // Set all individual conversations to enabled.
+        $updatesql = "UPDATE {message_conversations}
+                         SET enabled = :enabled
+                       WHERE type = :type";
+        $DB->execute($updatesql, ['enabled' => 1, 'type' => 1]);
+
+        upgrade_main_savepoint(true, 2018120300.02);
+    }
+
     return true;
 }
diff --git a/version.php b/version.php
index 11fd6913256..7961d6e7991 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2018120300.01;              // 20181203      = branching date YYYYMMDD - do not modify!
+$version  = 2018120300.02;              // 20181203      = branching date YYYYMMDD - do not modify!
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.