diff --git a/format/format_test.go b/format/format_test.go
index c09837aef..1dbe8174d 100644
--- a/format/format_test.go
+++ b/format/format_test.go
@@ -20,6 +20,7 @@ func TestHumanNumber(t *testing.T) {
 		{1000000000, "1.00B"},
 		{2800000000, "2.80B"},
 		{2850000000, "2.85B"},
+		{28550000000, "2B.6B"},
 		{1000000000000, "1.00T"},
 	}