diff --git a/include/boost/smart_ptr/intrusive_ptr.hpp b/include/boost/smart_ptr/intrusive_ptr.hpp
index 43930a3..3cd3dc7 100644
--- a/include/boost/smart_ptr/intrusive_ptr.hpp
+++ b/include/boost/smart_ptr/intrusive_ptr.hpp
@@ -279,7 +279,7 @@ template<class T, class U> intrusive_ptr<T> dynamic_pointer_cast(intrusive_ptr<U
 
 #if !defined(BOOST_NO_IOSTREAM)
 
-#if ( defined(__GNUC__) &&  (__GNUC__ < 3) )
+#if defined(BOOST_NO_TEMPLATED_IOSTREAMS) || ( defined(__GNUC__) &&  (__GNUC__ < 3) )
 
 template<class Y> std::ostream & operator<< (std::ostream & os, intrusive_ptr<Y> const & p)
 {
diff --git a/include/boost/smart_ptr/shared_ptr.hpp b/include/boost/smart_ptr/shared_ptr.hpp
index 22816df..106e349 100644
--- a/include/boost/smart_ptr/shared_ptr.hpp
+++ b/include/boost/smart_ptr/shared_ptr.hpp
@@ -836,7 +836,7 @@ template<class T> inline typename shared_ptr<T>::element_type * get_pointer(shar
 
 #if !defined(BOOST_NO_IOSTREAM)
 
-#if ( defined(__GNUC__) &&  (__GNUC__ < 3) )
+#if defined(BOOST_NO_TEMPLATED_IOSTREAMS) || ( defined(__GNUC__) &&  (__GNUC__ < 3) )
 
 template<class Y> std::ostream & operator<< (std::ostream & os, shared_ptr<Y> const & p)
 {