diff --git a/include/boost/detail/atomic_count.hpp b/include/boost/detail/atomic_count.hpp
index 804fd1a..b731fcc 100644
--- a/include/boost/detail/atomic_count.hpp
+++ b/include/boost/detail/atomic_count.hpp
@@ -90,23 +90,18 @@ typedef long atomic_count;
 }
 
 #elif defined(BOOST_AC_USE_PTHREADS)
-
 #  include <boost/detail/atomic_count_pthreads.hpp>
 
 #elif defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
-
 # include <boost/detail/atomic_count_gcc_x86.hpp>
 
 #elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
-
 #  include <boost/detail/atomic_count_win32.hpp>
 
-#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
-
+#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 ) && !defined( __arm__ ) && !defined( __hppa )
 #  include <boost/detail/atomic_count_sync.hpp>
 
 #elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
-
 #  include <boost/detail/atomic_count_gcc.hpp>
 
 #elif defined(BOOST_HAS_PTHREADS)