diff --git a/admin/tool/generator/cli/maketestplan.php b/admin/tool/generator/cli/maketestplan.php
index 23c9aa5..456393d 100644
--- a/admin/tool/generator/cli/maketestplan.php
+++ b/admin/tool/generator/cli/maketestplan.php
@@ -60,7 +60,7 @@ $testplansizes
 Consider that, the server resources you will need to run the test plan will be higher as the test plan size is higher.
 
 Example from Moodle root directory:
-\$ php admin/tool/generator/cli/maketestplan.php --shortname=\"testcourse_12\" --size=S
+\$ sudo -u www-data /usr/bin/php admin/tool/generator/cli/maketestplan.php --shortname=\"testcourse_12\" --size=S
 ";
     // Exit with error unless we're showing this because they asked for it.
     exit(empty($options['help']) ? 1 : 0);
diff --git a/config-dist.php b/config-dist.php
index f256aea..87fa327 100644
--- a/config-dist.php
+++ b/config-dist.php
@@ -631,7 +631,7 @@ $CFG->admin = 'admin';
 // users passwords but would be dangerous to have a default password as everybody would know it, which would
 // be specially dangerouse if somebody uses this tool in a production site, so in order to prevent unintended
 // uses of the tool and undesired accesses as well, is compulsory to set a password for the users
-// generated by this tool, but only in case you want to generate a JMeter test.
+// generated by this tool, but only in case you want to generate a JMeter test. The value should be a string.
 // Example:
 //   $CFG->tool_generator_users_password = 'examplepassword';