diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c
index d8cf5a6f9291..78da0d15c8eb 100644
--- a/drivers/iio/magnetometer/mmc35240.c
+++ b/drivers/iio/magnetometer/mmc35240.c
@@ -125,6 +125,7 @@ static const struct iio_chan_spec mmc35240_channels[] = {
 
 static struct attribute *mmc35240_attributes[] = {
 	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
+	NULL
 };
 
 static const struct attribute_group mmc35240_attribute_group = {