diff --git a/ui/src/core/file-upload.js b/ui/src/core/file-upload.js
index a576dde45b..e6b43cc9d4 100644
--- a/ui/src/core/file-upload.js
+++ b/ui/src/core/file-upload.js
@@ -44,6 +44,10 @@ function openUploadForm(options) {
         uploadTemplate = Handlebars.compile($("#" + options.templateId).html());
     }
 
+    if (typeof maxImagePixelSize === undefined || maxImagePixelSize === '') {
+        maxImagePixelSize = 0;
+    }
+
     // Handle bars and open a dialog
     var dialog = bootbox.dialog({
         message: uploadTemplate(options.templateOptions),
diff --git a/views/include-file-upload.twig b/views/include-file-upload.twig
index 42bd390323..f004dd73f7 100644
--- a/views/include-file-upload.twig
+++ b/views/include-file-upload.twig
@@ -17,7 +17,7 @@
 
 {# Max image resize size from settings #}
 <script type="text/javascript">
-  const maxImagePixelSize = {{ settings.DEFAULT_RESIZE_LIMIT }};
+  let maxImagePixelSize = "{{ settings.DEFAULT_RESIZE_LIMIT }}";
 </script>
 
 {# Handlebars Templates #}