diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 3feb49547..6eb02f1cf 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -326,7 +326,7 @@ module ApplicationHelper
   end
 
   def thumbnail_issue_tag(attachment)
-    imagesize = attachment.thumbnail(:size => "50*50")
+    imagesize = attachment.thumbnail(:size => "200*200")
     imagepath = named_attachment_path(attachment, attachment.filename)
     if imagesize
       link_to image_tag(thumbnail_path(attachment), height: '73', width: '100'),