diff --git a/include/boost/functional/detail/hash_float.hpp b/include/boost/functional/detail/hash_float.hpp
index 56e1464..cc9fd51 100644
--- a/include/boost/functional/detail/hash_float.hpp
+++ b/include/boost/functional/detail/hash_float.hpp
@@ -16,6 +16,8 @@
 #endif
 
 #include <boost/functional/detail/float_functions.hpp>
+#include <errno.h>
+#include <boost/limits.hpp>
 
 namespace boost
 {
diff --git a/include/boost/functional/hash/hash.hpp b/include/boost/functional/hash/hash.hpp
index 621da84..1e6552a 100644
--- a/include/boost/functional/hash/hash.hpp
+++ b/include/boost/functional/hash/hash.hpp
@@ -17,8 +17,6 @@
 
 #include <boost/functional/hash_fwd.hpp>
 #include <functional>
-#include <errno.h>
-#include <boost/limits.hpp>
 #include <boost/functional/detail/hash_float.hpp>
 #include <boost/functional/detail/container_fwd.hpp>