diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 6a18b363cf73..b6e6b1df8a61 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -2687,7 +2687,7 @@ static int lsm6dsx_get_acpi_mount_matrix(struct device *dev,
 static int lsm6dsx_get_acpi_mount_matrix(struct device *dev,
 					  struct iio_mount_matrix *orientation)
 {
-	return false;
+	return -EOPNOTSUPP;
 }
 
 #endif