diff --git a/tests/mkfs-tests/010-minimal-size/test.sh b/tests/mkfs-tests/010-minimal-size/test.sh
index f75a22d8..f33b8aa3 100755
--- a/tests/mkfs-tests/010-minimal-size/test.sh
+++ b/tests/mkfs-tests/010-minimal-size/test.sh
@@ -18,6 +18,7 @@ do_test()
 	good_size=$(echo "$output" | grep -oP "(?<=is )\d+")
 
 	prepare_test_dev "$good_size"
+	echo "Minimal device size is $good_size" >> "$RESULTS"
 	run_check $TOP/mkfs.btrfs -f $@ "$TEST_DEV"
 	run_check_mount_test_dev
 	run_check_umount_test_dev