diff --git a/example/timer/regex_timer.cpp b/example/timer/regex_timer.cpp
index 2ded700c..8dd4c3f2 100644
--- a/example/timer/regex_timer.cpp
+++ b/example/timer/regex_timer.cpp
@@ -59,9 +59,19 @@ ostream& operator << (ostream& os, const std::wstring& s)
 #endif
 
 template <class S>
-class string_out_iterator : 
-  public std::iterator<std::output_iterator_tag, void, void, void, void>
+class string_out_iterator 
+#ifndef BOOST_NO_STD_ITERATOR
+  : public std::iterator<std::output_iterator_tag, void, void, void, void>
+#endif // ndef BOOST_NO_STD_ITERATOR
 {
+#ifdef BOOST_NO_STD_ITERATOR
+   typedef std::output_iterator_tag iterator_category;
+   typedef void value_type;
+   typedef void difference_type;
+   typedef void pointer;
+   typedef void reference;
+#endif // BOOST_NO_STD_ITERATOR
+
    S* out;
 public:
    string_out_iterator(S& s) : out(&s) {}