diff --git a/lib/report/report.c b/lib/report/report.c
index 2d39cb0d7..3626769a9 100644
--- a/lib/report/report.c
+++ b/lib/report/report.c
@@ -695,6 +695,9 @@ static int _devsize_disp(struct dm_report *rh, struct dm_pool *mem,
 {
 	uint64_t size;
 
+	if (!data)
+		return _field_set_value(field, "", NULL);
+
 	if (!dev_get_size(*(const struct device **) data, &size))
 		return_0;