diff -r 5d2d63f4363e -r 151d137f1095 src/HOL/IMP/Def_Ass_Sound_Big.thy
--- a/src/HOL/IMP/Def_Ass_Sound_Big.thy	Fri Apr 27 23:17:58 2012 +0200
+++ b/src/HOL/IMP/Def_Ass_Sound_Big.thy	Sat Apr 28 07:38:22 2012 +0200
@@ -16,7 +16,7 @@
   case AssignNone thus ?case
     by auto (metis aval_Some option.simps(3) subset_trans)
 next
-  case Semi thus ?case by auto metis
+  case Seq thus ?case by auto metis
 next
   case IfTrue thus ?case by auto blast
 next