diff --git a/extension.json b/extension.json
index 8bd9134d..a05eb7e3 100644
--- a/extension.json
+++ b/extension.json
@@ -10,7 +10,7 @@
 	"descriptionmsg": "oathauth-desc",
 	"type": "other",
 	"requires": {
-		"MediaWiki": ">= 1.37.0"
+		"MediaWiki": ">= 1.38.0"
 	},
 	"license-name": "GPL-2.0-or-later AND GPL-3.0-or-later",
 	"attributes": {
diff --git a/src/Special/DisableOATHForUser.php b/src/Special/DisableOATHForUser.php
index f7b99fad..c3238c12 100644
--- a/src/Special/DisableOATHForUser.php
+++ b/src/Special/DisableOATHForUser.php
@@ -53,7 +53,7 @@ class DisableOATHForUser extends FormSpecialPage {
 	public function alterForm( HTMLForm $form ) {
 		$form->setMessagePrefix( 'oathauth' );
 		$form->setWrapperLegendMsg( 'oathauth-disable-for-user' );
-		$form->setPreText( $this->msg( 'oathauth-disable-intro' )->parse() );
+		$form->setPreHtml( $this->msg( 'oathauth-disable-intro' )->parse() );
 		$form->getOutput()->setPageTitle( $this->msg( 'oathauth-disable-for-user' ) );
 	}