diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 7fe4a5c944c9655e60c126ce1dabe0fe9027d0fb..b7092a47064b35e15d234cc354441921c846deb8 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -22,6 +22,7 @@
 
 #include <asm/prom.h>
 #include <asm/rtas.h>
+#include <asm/hvcall.h>
 #include <asm/semaphore.h>
 #include <asm/machdep.h>
 #include <asm/page.h>