diff --git a/src/arch/alpha/floatregfile.cc b/src/arch/alpha/floatregfile.cc
index 15dc13166..192b0f1d4 100644
--- a/src/arch/alpha/floatregfile.cc
+++ b/src/arch/alpha/floatregfile.cc
@@ -30,6 +30,8 @@
  *          Kevin Lim
  */
 
+#include <cstring>
+
 #include "arch/alpha/floatregfile.hh"
 #include "sim/serialize.hh"