diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index 30e506e37dd26adb6ad0510f8be0f1ca298b786d..e56ec0abb509d3036224ed3293c10d929a5f8b01 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -78,7 +78,7 @@ struct ad5686_state {
 	 */
 
 	union {
-		u32 d32;
+		__be32 d32;
 		u8 d8[4];
 	} data[3] ____cacheline_aligned;
 };