diff -r fcfb4aa8e6e6 -r 933f35c4e126 src/HOL/Fact.thy
--- a/src/HOL/Fact.thy	Tue Jan 17 11:15:36 2012 +0100
+++ b/src/HOL/Fact.thy	Tue Jan 17 16:30:54 2012 +0100
@@ -255,8 +255,6 @@
     fact m < fact ((m + 1) + k)"
   apply (induct k rule: int_ge_induct)
   apply (simp add: fact_plus_one_int)
-  apply (subst mult_less_cancel_right1)
-  apply (insert fact_gt_zero_int [of m], arith)
   apply (subst (2) fact_reduce_int)
   apply (auto simp add: add_ac)
   apply (erule order_less_le_trans)