diff --git a/cleaner/custom_sql_post/settings.php b/cleaner/custom_sql_post/settings.php
index e6a5bac..04971ad 100644
--- a/cleaner/custom_sql_post/settings.php
+++ b/cleaner/custom_sql_post/settings.php
@@ -29,4 +29,4 @@
 
 $settings->add(new admin_setting_configtextarea('cleaner_custom_sql_post/sql',
             new lang_string('sql', 'cleaner_custom_sql_post'),
-            new lang_string('sqldesc', 'cleaner_custom_sql_post'), null, PARAM_RAW));
+            new lang_string('sqldesc', 'cleaner_custom_sql_post'), '', PARAM_RAW));
diff --git a/cleaner/custom_sql_pre/settings.php b/cleaner/custom_sql_pre/settings.php
index da20139..26aa1ae 100644
--- a/cleaner/custom_sql_pre/settings.php
+++ b/cleaner/custom_sql_pre/settings.php
@@ -29,4 +29,4 @@
 
 $settings->add(new admin_setting_configtextarea('cleaner_custom_sql_pre/sql',
             new lang_string('sql', 'cleaner_custom_sql_pre'),
-            new lang_string('sqldesc', 'cleaner_custom_sql_pre'), null, PARAM_RAW));
+            new lang_string('sqldesc', 'cleaner_custom_sql_pre'), '', PARAM_RAW));