diff --git a/frontend/src/ketr-photos/ketr-photos.html b/frontend/src/ketr-photos/ketr-photos.html
index 7d75f3f..7cfd54c 100755
--- a/frontend/src/ketr-photos/ketr-photos.html
+++ b/frontend/src/ketr-photos/ketr-photos.html
@@ -337,7 +337,7 @@
             start = 0;
             stop = this.thumbnails.length - 1;
             if (this.visibleThumbs.length) {
-              index = this.visibleThumbs[stop >> 1];
+              index = this.visibleThumbs[this.visibleThumbs.length >> 1];
             } else {
               index = length >> 1;
             }