diff --git a/app/helpers/watchers_helper.rb b/app/helpers/watchers_helper.rb
index 8974a52d3..7995d7e68 100644
--- a/app/helpers/watchers_helper.rb
+++ b/app/helpers/watchers_helper.rb
@@ -155,7 +155,7 @@ module WatchersHelper
     else
       text = l(:label_new_join_group)
       form_tag({:controller => "courses", :action => "join_group", :object_id => "#{group.id}"}, :remote => true, :method => 'post') do
-        submit_tag text, class: "group_in", style: "width: 43px;height: 21px;"
+        submit_tag text, class: "group_in", style: "width: 90px;height: 21px;"
       end
     end
   end