Index: abi/doc/doxygroups.h
===================================================================
--- abi/doc/doxygroups.h	(revision 3694ced7e621aa03617c9dc91da7b92f534463c5)
+++ abi/doc/doxygroups.h	(revision b63f4e8923acb50eeb87d363e82f2908a460b2a9)
@@ -26,4 +26,9 @@
 /**
  * @defgroup abi_arm32 arm32
+ * @ingroup abi
+ */
+
+/**
+ * @defgroup abi_arm64 arm64
  * @ingroup abi
  */