diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
index e5eae75..c6fb5d1 100644
--- a/drivers/mfd/wm8400-core.c
+++ b/drivers/mfd/wm8400-core.c
@@ -64,7 +64,7 @@
 
 static int wm8400_register_codec(struct wm8400 *wm8400)
 {
-	struct mfd_cell cell = {
+	const struct mfd_cell cell = {
 		.name = "wm8400-codec",
 		.platform_data = wm8400,
 		.pdata_size = sizeof(*wm8400),