--- a/src/HOL/ex/Hebrew.thy Tue Sep 09 17:51:07 2014 +0200
+++ b/src/HOL/ex/Hebrew.thy Tue Sep 09 20:51:36 2014 +0200
@@ -12,7 +12,7 @@
text {* The Hebrew Alef-Bet (א-ב). *}
-datatype alef_bet =
+datatype_new alef_bet =
Alef ("א")
| Bet ("ב")
| Gimel ("ג")