diff --git a/vaadin-dir-helper.html b/vaadin-dir-helper.html
index 93465d0..65af7e9 100644
--- a/vaadin-dir-helper.html
+++ b/vaadin-dir-helper.html
@@ -33,8 +33,8 @@
         if (dummy.scrollLeft > 0) {
           cachedType = 'default';
         } else {
-          dummy.scrollLeft = 1;
-          if (dummy.scrollLeft === 0) {
+          dummy.scrollLeft = 2;
+          if (dummy.scrollLeft < 2) {
             cachedType = 'negative';
           }
         }