diff --git a/db/upgrade.php b/db/upgrade.php
index 2dc9304..7ee6350 100644
--- a/db/upgrade.php
+++ b/db/upgrade.php
@@ -269,5 +269,21 @@ function xmldb_report_customsql_upgrade($oldversion) {
         upgrade_plugin_savepoint(true, 2021111600, 'report', 'customsql');
     }
 
+    if ($oldversion < 2022031801) {
+
+        // Changing nullability of field name on table report_customsql_categories to not null.
+        // Changing the default of field name on table report_customsql_categories to drop it.
+        $table = new xmldb_table('report_customsql_categories');
+        $field = new xmldb_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'id');
+
+        // Launch change of nullability for field name.
+        $dbman->change_field_notnull($table, $field);
+        // Launch change of default for field name.
+        $dbman->change_field_default($table, $field);
+
+        // Report savepoint reached.
+        upgrade_plugin_savepoint(true, 2022031801, 'report', 'customsql');
+    }
+
     return true;
 }
diff --git a/tests/local/category_test.php b/tests/local/category_test.php
index 51b0353..829a2bc 100644
--- a/tests/local/category_test.php
+++ b/tests/local/category_test.php
@@ -28,7 +28,7 @@
  * @copyright 2021 The Open University
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-class _category_test extends \advanced_testcase {
+class category_test extends \advanced_testcase {
     /**
      * Test create category.
      */
diff --git a/version.php b/version.php
index fd29261..6e60617 100644
--- a/version.php
+++ b/version.php
@@ -24,7 +24,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2022031800;
+$plugin->version   = 2022031801;
 $plugin->requires  = 2020061500;
 $plugin->component = 'report_customsql';
 $plugin->maturity  = MATURITY_STABLE;