diff --git a/maintenance/CountFancyCaptchas.php b/maintenance/CountFancyCaptchas.php
index 141d35015..19cf63893 100644
--- a/maintenance/CountFancyCaptchas.php
+++ b/maintenance/CountFancyCaptchas.php
@@ -36,7 +36,7 @@ require_once "$IP/maintenance/Maintenance.php";
 class CountFancyCaptchas extends Maintenance {
 	public function __construct() {
 		parent::__construct();
-		$this->mDescription = "Counts the number of fancy aptchas in storage";
+		$this->addDescription( "Counts the number of fancy aptchas in storage" );
 		$this->requireExtension( "FancyCaptcha" );
 	}
 
diff --git a/maintenance/DeleteOldFancyCaptchas.php b/maintenance/DeleteOldFancyCaptchas.php
index 9dc693d61..c6511ae28 100644
--- a/maintenance/DeleteOldFancyCaptchas.php
+++ b/maintenance/DeleteOldFancyCaptchas.php
@@ -36,7 +36,7 @@ require_once "$IP/maintenance/Maintenance.php";
 class DeleteOldFancyCaptchas extends Maintenance {
 	public function __construct() {
 		parent::__construct();
-		$this->mDescription = "Deletes old fancy captchas from storage";
+		$this->addDescription( "Deletes old fancy captchas from storage" );
 		$this->addOption(
 			"date",
 			'Delete fancy captchas that were created before this date (e.g. 20170101000000)',
diff --git a/maintenance/GenerateFancyCaptchas.php b/maintenance/GenerateFancyCaptchas.php
index 3761096c4..cb8af3cea 100644
--- a/maintenance/GenerateFancyCaptchas.php
+++ b/maintenance/GenerateFancyCaptchas.php
@@ -52,7 +52,7 @@ class GenerateFancyCaptchas extends Maintenance {
 		$this->addOption( "delete", "Delete the old captches" );
 		$this->addOption( "threads", "The number of threads to use to generate the images",
 			false, true );
-		$this->mDescription = "Generate new fancy captchas and move them into storage";
+		$this->addDescription( "Generate new fancy captchas and move them into storage" );
 
 		$this->requireExtension( "FancyCaptcha" );
 	}