diff --git a/include/boost/intrusive/options.hpp b/include/boost/intrusive/options.hpp
index b1dd944..5449a44 100644
--- a/include/boost/intrusive/options.hpp
+++ b/include/boost/intrusive/options.hpp
@@ -33,6 +33,8 @@ namespace detail{
 
 struct default_hook_tag{};
 
+#ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
+
 #define BOOST_INTRUSIVE_DEFAULT_HOOK_MARKER_DEFINITION(BOOST_INTRUSIVE_DEFAULT_HOOK_MARKER) \
 struct BOOST_INTRUSIVE_DEFAULT_HOOK_MARKER : public default_hook_tag\
 {\
@@ -51,6 +53,8 @@ BOOST_INTRUSIVE_DEFAULT_HOOK_MARKER_DEFINITION(default_bs_set_hook);
 
 #undef BOOST_INTRUSIVE_DEFAULT_HOOK_MARKER_DEFINITION
 
+#endif   //BOOST_INTRUSIVE_DOXYGEN_INVOKED
+
 template <class ValueTraits>
 struct eval_value_traits
 {
diff --git a/include/boost/intrusive/pointer_plus_bits.hpp b/include/boost/intrusive/pointer_plus_bits.hpp
index a2a9f1b..273452c 100644
--- a/include/boost/intrusive/pointer_plus_bits.hpp
+++ b/include/boost/intrusive/pointer_plus_bits.hpp
@@ -47,7 +47,11 @@ struct max_pointer_plus_bits<void*, Alignment>
 //!has_pointer_plus_bits<>::value is non-zero can make use of these
 //!operations to embed the bits in the pointer.
 template<class Pointer, std::size_t NumBits>
-struct pointer_plus_bits;
+struct pointer_plus_bits
+   #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
+   {}
+   #endif
+;
 
 //!This is the specialization to embed extra bits of information
 //!in a raw pointer. The extra bits are stored in the lower bits of the pointer.