diff --git a/sound/oss/i810_audio.c b/sound/oss/i810_audio.c
index 240cc79..c3c8a72 100644
--- a/sound/oss/i810_audio.c
+++ b/sound/oss/i810_audio.c
@@ -101,6 +101,7 @@
 #include <linux/ac97_codec.h>
 #include <linux/bitops.h>
 #include <linux/mutex.h>
+#include <linux/mm.h>
 
 #include <asm/uaccess.h>