diff --git a/backend/workers/thumbnails.go b/backend/workers/thumbnails.go
index 7c18335..6c54aa4 100644
--- a/backend/workers/thumbnails.go
+++ b/backend/workers/thumbnails.go
@@ -162,7 +162,7 @@ func generateOfficeThumbnail(filePath, destPath string, cfg *config.Config) erro
 		"title":      "preview.jpg",
 		"url":        fileUrl,
 		"thumbnail": map[string]interface{}{
-			"aspect": 0,
+			"aspect": 1,
 			"first":  true,
 			"width":  1024,
 			"height": 1024,