diff --git a/apps/files_sharing/js/public.js b/apps/files_sharing/js/public.js
index 6261c70626d..32a469414d6 100644
--- a/apps/files_sharing/js/public.js
+++ b/apps/files_sharing/js/public.js
@@ -159,6 +159,8 @@ OCA.Sharing.PublicApp = {
 
 			this.fileList.generatePreviewUrl = function (urlSpec) {
 				urlSpec.t = $('#dirToken').val();
+				urlSpec.y = 36 * window.devicePixelRatio;
+				urlSpec.x = 36 * window.devicePixelRatio;
 				return OC.generateUrl('/apps/files_sharing/ajax/publicpreview.php?') + $.param(urlSpec);
 			};