diff --git a/lms/templates/assignment.html b/lms/templates/assignment.html
index c8577887..f32fcb99 100644
--- a/lms/templates/assignment.html
+++ b/lms/templates/assignment.html
@@ -4,7 +4,7 @@
         <div class="my-3"> {{ _(question) }} </div>
         <input class="btn btn-default btn-sm border attach-file" type="file" accept="{{ accept }}" />
         <div class="btn btn-secondary ml-2 submit-work">{{ _("Submit") }}</div>
-        <div class="preview-work small hide">
+        <div class="preview-work hide">
         <a target="_blank"></a>
         <div class="btn btn-secondary btn-sm ml-2 clear-work">{{ _("Change") }}</div>
         </div>
diff --git a/lms/www/batch/learn.js b/lms/www/batch/learn.js
index 16289d53..fc55da75 100644
--- a/lms/www/batch/learn.js
+++ b/lms/www/batch/learn.js
@@ -542,11 +542,13 @@ const make_editor = () => {
 
 
 const set_file_type = () => {
+    let self = this;
     let file_type = $("#file-type").data("type");
     if (file_type) {
         $("#file-type option").each((i, elem) => {
             if ($(elem).val() == file_type) {
                 $(elem).attr("selected", true);
+                self.file_type = file_type;
             }
         })
     }