diff --git a/src/cpu/amd/model_lx/msrinit.c b/src/cpu/amd/model_lx/msrinit.c
index 2ed7c94f71..c7b45470e6 100644
--- a/src/cpu/amd/model_lx/msrinit.c
+++ b/src/cpu/amd/model_lx/msrinit.c
@@ -17,6 +17,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include <stdlib.h>
+
 struct msrinit {
 	u32 msrnum;
 	msr_t msr;