--- a/src/HOL/Library/Multiset.thy Tue Feb 23 08:04:07 2010 +0100
+++ b/src/HOL/Library/Multiset.thy Tue Feb 23 08:08:23 2010 +0100
@@ -1212,8 +1212,8 @@
definition le_multiset :: "'a\<Colon>order multiset \<Rightarrow> 'a multiset \<Rightarrow> bool" (infix "<=#" 50) where
"M' <=# M \<longleftrightarrow> M' <# M \<or> M' = M"
-notation (xsymbol) less_multiset (infix "\<subset>#" 50)
-notation (xsymbol) le_multiset (infix "\<subseteq>#" 50)
+notation (xsymbols) less_multiset (infix "\<subset>#" 50)
+notation (xsymbols) le_multiset (infix "\<subseteq>#" 50)
interpretation multiset_order: order le_multiset less_multiset
proof -