diff -r a09ec6daaa19 -r 91ea607a34d8 src/HOL/Isar_Examples/Hoare.thy
--- a/src/HOL/Isar_Examples/Hoare.thy	Thu Sep 11 19:26:59 2014 +0200
+++ b/src/HOL/Isar_Examples/Hoare.thy	Thu Sep 11 19:32:36 2014 +0200
@@ -21,7 +21,7 @@
 type_synonym 'a bexp = "'a set"
 type_synonym 'a assn = "'a set"
 
-datatype_new 'a com =
+datatype 'a com =
     Basic "'a \<Rightarrow> 'a"
   | Seq "'a com" "'a com"    ("(_;/ _)" [60, 61] 60)
   | Cond "'a bexp" "'a com" "'a com"