diff --git a/include/boost/type_index/stl_type_index.hpp b/include/boost/type_index/stl_type_index.hpp
index 1b3b0c4..c801e70 100644
--- a/include/boost/type_index/stl_type_index.hpp
+++ b/include/boost/type_index/stl_type_index.hpp
@@ -39,7 +39,6 @@
 #include <boost/type_traits/remove_reference.hpp>
 #include <boost/mpl/if.hpp>
 #include <boost/mpl/or.hpp>
-#include <boost/functional/hash_fwd.hpp>
 
 #if (defined(__EDG_VERSION__) && __EDG_VERSION__ < 245) \
         || (defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 744)
diff --git a/include/boost/type_index/type_index_facade.hpp b/include/boost/type_index/type_index_facade.hpp
index c18ea4b..e0e0a4a 100644
--- a/include/boost/type_index/type_index_facade.hpp
+++ b/include/boost/type_index/type_index_facade.hpp
@@ -10,7 +10,6 @@
 #define BOOST_TYPE_INDEX_TYPE_INDEX_FACADE_HPP
 
 #include <boost/config.hpp>
-#include <boost/functional/hash_fwd.hpp>
 #include <string>
 #include <cstring>
 
@@ -26,6 +25,11 @@
 # pragma once
 #endif
 
+// Forward declaration from #include <boost/functional/hash_fwd.hpp>
+namespace boost {
+    template <class It> std::size_t hash_range(It, It);
+}
+
 namespace boost { namespace typeindex {
 
 /// \class type_index_facade