--- a/shared/src/main/scala/twbsTags.scala	Thu Jun 29 17:15:34 2017 +0200
+++ b/shared/src/main/scala/twbsTags.scala	Thu Aug 31 15:11:52 2017 +0200
@@ -28,7 +28,7 @@
 
 object uibAccordion {
   val acMain = tag("uib-accordion")
-  val acGroup = tag("uib-accordion-group")
+  val acGroup = attr("uib-accordion-group").empty
   val acHeading = tag("uib-accordion-heading")
   val closeOthers = attr("close-others")
 }