diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h
index bb38dd67d47dd..1b06add4f092a 100644
--- a/arch/powerpc/include/asm/rtas.h
+++ b/arch/powerpc/include/asm/rtas.h
@@ -5,6 +5,7 @@
 #include <linux/spinlock.h>
 #include <asm/page.h>
 #include <linux/time.h>
+#include <linux/cpumask.h>
 
 /*
  * Definitions for talking to the RTAS on CHRP machines.