diff --git a/include/boost/detail/sp_counted_base_sync.hpp b/include/boost/detail/sp_counted_base_sync.hpp
index c01c3c5..d72dac2 100644
--- a/include/boost/detail/sp_counted_base_sync.hpp
+++ b/include/boost/detail/sp_counted_base_sync.hpp
@@ -18,6 +18,10 @@
 #include <boost/detail/sp_typeinfo.hpp>
 #include <limits.h>
 
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER )
+# include <ia64intrin.h>
+#endif
+
 namespace boost
 {