diff --git a/string/doc/concept.xml b/string/doc/concept.xml
index ed43108..fd432c2 100644
--- a/string/doc/concept.xml
+++ b/string/doc/concept.xml
@@ -102,7 +102,7 @@
 struct simple_finder
 {
     template<typename ForwardIteratorT>
-    boost::iterator_range<ForwardIterator> operator()(
+    boost::iterator_range<ForwardIteratorT> operator()(
         ForwardIteratorT Begin,
         ForwardIteratorT End )
     {