diff --git a/rapids/templates/rapids/rapid_form.html b/rapids/templates/rapids/rapid_form.html
index efb7544a..c213de21 100755
--- a/rapids/templates/rapids/rapid_form.html
+++ b/rapids/templates/rapids/rapid_form.html
@@ -364,7 +364,7 @@
                 //images.push(reader.result);
 
                 active_file_inputs.delete(el)
-                if (active_file_inputs.length < 1) {
+                if (active_file_inputs.size < 1) {
                     loadViewer();
                 }
             });