1.1 --- a/lemon/bits/default_map.h	Thu Apr 13 17:22:17 2006 +0000
     1.2 +++ b/lemon/bits/default_map.h	Thu Apr 13 17:57:03 2006 +0000
     1.3 @@ -159,7 +159,7 @@
     1.4      typedef typename Parent::Graph Graph;
     1.5      typedef typename Parent::Value Value;
     1.6  
     1.7 -    DefaultMap(const Graph& graph) : Parent(graph) {}
     1.8 +    explicit DefaultMap(const Graph& graph) : Parent(graph) {}
     1.9      DefaultMap(const Graph& graph, const Value& value) 
    1.10        : Parent(graph, value) {}
    1.11