diff --git a/lib/header_footer_hook_listener.rb b/lib/header_footer_hook_listener.rb
index 8948778..01c7289 100644
--- a/lib/header_footer_hook_listener.rb
+++ b/lib/header_footer_hook_listener.rb
@@ -14,6 +14,6 @@ class HeaderFooterHookListener < Redmine::Hook::ViewListener
   end
 
   def view_layouts_base_body_bottom(context = {})
-    return "<div class="bgl"><div class="bgr"><b>Last Sync: </b> #{Qbo.last_sync}</div></div>"
+    return '<div class="bgl"><div class="bgr"><b>Last Sync: </b> #{Qbo.last_sync}</div></div>'
   end
 end