diff -r 42af94def765 -r f662831459de src/HOL/Library/Multiset.thy
--- a/src/HOL/Library/Multiset.thy	Tue Feb 13 18:26:48 2007 +0100
+++ b/src/HOL/Library/Multiset.thy	Wed Feb 14 10:06:12 2007 +0100
@@ -665,10 +665,10 @@
 
 instance multiset :: (order) order
   apply intro_classes
-     apply (rule mult_le_refl)
+    apply (rule mult_less_le)
+    apply (rule mult_le_refl)
     apply (erule mult_le_trans, assumption)
-   apply (erule mult_le_antisym, assumption)
-  apply (rule mult_less_le)
+    apply (erule mult_le_antisym, assumption)
   done