diff --git a/src/_h5ai/public/js/lib/ext/preview/preview.js b/src/_h5ai/public/js/lib/ext/preview/preview.js
index 703b2b99..d5a44fb0 100644
--- a/src/_h5ai/public/js/lib/ext/preview/preview.js
+++ b/src/_h5ai/public/js/lib/ext/preview/preview.js
@@ -213,7 +213,7 @@ Session.prototype = {
                     }
                 });
                 dom('#pv-container').hide().clr();
-                showSpinner(true, item.thumbSquare || item.icon, 200);
+                showSpinner(true, item.thumbRational || item.icon, 200);
             })
             .then(() => this.load(item))
             // delay for testing
diff --git a/src/_h5ai/public/js/lib/ext/thumbnails.js b/src/_h5ai/public/js/lib/ext/thumbnails.js
index b3c445fa..16020798 100644
--- a/src/_h5ai/public/js/lib/ext/thumbnails.js
+++ b/src/_h5ai/public/js/lib/ext/thumbnails.js
@@ -30,23 +30,8 @@ const queueItem = (queue, item) => {
         type = 'file'
     }
 
-    if (item.thumbSquare) {
-        item.$view.find('.icon.square img').addCls('thumb').attr('src', item.thumbSquare);
-    } else {
-        queue.push({
-            type,
-            href: item.absHref,
-            callback: src => {
-                if (src && item.$view) {
-                    item.thumbSquare = src;
-                    item.$view.find('.icon.square img').addCls('thumb').attr('src', src);
-                }
-            }
-        });
-    }
-
     if (item.thumbRational) {
-        item.$view.find('.icon.landscape img').addCls('thumb').attr('src', item.thumbRational);
+        item.$view.find('.icon img').addCls('thumb').attr('src', item.thumbRational);
     } else {
         queue.push({
             type,
@@ -54,7 +39,7 @@ const queueItem = (queue, item) => {
             callback: src => {
                 if (src && item.$view) {
                     item.thumbRational = src;
-                    item.$view.find('.icon.landscape img').addCls('thumb').attr('src', src);
+                    item.$view.find('.icon img').addCls('thumb').attr('src', src);
                 }
             }
         });