diff -r d794ec195ec0 -r b88dd07e6349 lemon/maps.h
--- a/lemon/maps.h	Fri Jan 04 23:13:45 2008 +0100
+++ b/lemon/maps.h	Fri Jan 04 23:20:08 2008 +0100
@@ -1308,7 +1308,7 @@
             _maps_bits::Identity<typename Container::value_type> >
   class BackInserterBoolMap {
   public:
-    typedef typename Container::value_type Key;
+    typedef typename Functor::argument_type Key;
     typedef bool Value;
 
     /// Constructor
@@ -1343,7 +1343,7 @@
             _maps_bits::Identity<typename Container::value_type> >
   class FrontInserterBoolMap {
   public:
-    typedef typename Container::value_type Key;
+    typedef typename Functor::argument_type Key;
     typedef bool Value;
 
     /// Constructor