diff -r 16b4f5774621 -r 13b101cee425 src/HOL/Library/Multiset.thy
--- a/src/HOL/Library/Multiset.thy	Sun Nov 20 21:07:10 2011 +0100
+++ b/src/HOL/Library/Multiset.thy	Sun Nov 20 21:28:07 2011 +0100
@@ -1527,7 +1527,7 @@
 apply (rule iffI)
  prefer 2
  apply blast
-apply (rule_tac A=A and f=f in fold_msetG_nonempty [THEN exE, standard])
+apply (rule_tac A1=A and f1=f in fold_msetG_nonempty [THEN exE])
 apply (blast intro: fold_msetG_determ)
 done