diff --git a/lib/Service/LangRepository.php b/lib/Service/LangRepository.php
index 1cde40a..4034b85 100644
--- a/lib/Service/LangRepository.php
+++ b/lib/Service/LangRepository.php
@@ -30,7 +30,12 @@ class LangRepository
             ->from('preferences')
         ;
 
-        $stmt = $qb->execute();
+        // Nextcloud >=33+
+        if (method_exists($qb, 'executeQuery')) {
+            $stmt = $qb->executeQuery();
+        } else {
+            $stmt = $qb->execute();
+        }
 
         $langs = ['en'];