diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index bba727c..73f66d0 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -50,6 +50,7 @@
 #include <linux/err.h>
 #include <linux/kfifo.h>
 #include <linux/platform_device.h>
+#include <linux/gfp.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>