diff -r 6cbfe187a0f9 -r 6efff142bb54 src/HOL/Code_Numeral.thy
--- a/src/HOL/Code_Numeral.thy	Mon Jul 23 09:26:55 2012 +0200
+++ b/src/HOL/Code_Numeral.thy	Mon Jul 23 09:28:03 2012 +0200
@@ -298,7 +298,7 @@
 code_const "minus \<Colon> code_numeral \<Rightarrow> code_numeral \<Rightarrow> code_numeral"
   (SML "Int.max/ (0 : int,/ Int.-/ ((_),/ (_)))")
   (OCaml "Big'_int.max'_big'_int/ Big'_int.zero'_big'_int/ (Big'_int.sub'_big'_int/ _/ _)")
-  (Haskell "max/ (0 :: Integer)/ (_/ -/ _)")
+  (Haskell "Prelude.max/ (0 :: Integer)/ (_/ -/ _)")
   (Scala "!(_/ -/ _).max(0)")
   (Eval "Integer.max/ 0/ (_/ -/ _)")