diff --git a/sys/alpha/include/floatingpoint.h b/sys/alpha/include/floatingpoint.h
index 2d74a73bb37..627f5e3a937 100644
--- a/sys/alpha/include/floatingpoint.h
+++ b/sys/alpha/include/floatingpoint.h
@@ -30,3 +30,5 @@
  * SUCH DAMAGE.
  *
  */
+
+#include <machine/ieeefp.h>