diff --git a/includes/ApiDiscussionToolsPageInfo.php b/includes/ApiDiscussionToolsPageInfo.php
index 07d48011b..e50015c1c 100644
--- a/includes/ApiDiscussionToolsPageInfo.php
+++ b/includes/ApiDiscussionToolsPageInfo.php
@@ -12,6 +12,7 @@ use MediaWiki\Extension\DiscussionTools\ThreadItem\ContentHeadingItem;
 use MediaWiki\Extension\DiscussionTools\ThreadItem\ContentThreadItem;
 use MediaWiki\Extension\VisualEditor\VisualEditorParsoidClientFactory;
 use MediaWiki\Revision\RevisionLookup;
+use MediaWiki\Revision\RevisionRecord;
 use MediaWiki\Title\Title;
 use Wikimedia\ParamValidator\ParamValidator;
 use Wikimedia\Parsoid\Core\ResourceLimitExceededException;
@@ -112,6 +113,10 @@ class ApiDiscussionToolsPageInfo extends ApiBase {
 			return new ContentThreadItemSet;
 		}
 
+		if ( !$revision->audienceCan( RevisionRecord::DELETED_TEXT, RevisionRecord::FOR_PUBLIC ) ) {
+			$this->dieWithError( [ 'apierror-missingcontent-revid', $revision->getId() ], 'missingcontent' );
+		}
+
 		try {
 			return HookUtils::parseRevisionParsoidHtml( $revision, __METHOD__ );
 		} catch ( ResourceLimitExceededException $e ) {