diff -r 9afd9b9c47d0 -r c40ce2de2020 src/HOL/Library/While_Combinator.thy
--- a/src/HOL/Library/While_Combinator.thy	Sun Jun 04 10:52:47 2006 +0200
+++ b/src/HOL/Library/While_Combinator.thy	Mon Jun 05 14:22:58 2006 +0200
@@ -130,7 +130,7 @@
   apply (blast dest: monoD)
  apply (fastsimp intro!: lfp_lowerbound)
  apply (blast intro: wf_finite_psubset Int_lower2 [THEN [2] wf_subset])
-apply (clarsimp simp add: inv_image_def finite_psubset_def order_less_le)
+apply (clarsimp simp add: finite_psubset_def order_less_le)
 apply (blast intro!: finite_Diff dest: monoD)
 done