diff --git a/rapids/templates/rapids/rapid_form.html b/rapids/templates/rapids/rapid_form.html
index 0b91ba7f..6cd8f0e4 100755
--- a/rapids/templates/rapids/rapid_form.html
+++ b/rapids/templates/rapids/rapid_form.html
@@ -515,7 +515,7 @@
 
                 const element = $(`<div class='temp-thumb' src=${reader.result}></div>`).get(0)
                 $(el).parent().parent().prepend(element);
-                const imageId = `wadouri:${a}`;
+                const imageId = `wadouri:${url}`;
                 cornerstone.enable(element);
                 cornerstone.loadAndCacheImage(imageId).then(function (image) {
                     cornerstone.displayImage(element, image);