diff --git a/types/store_test.go b/types/store_test.go
index 2fd94418527e..43dd1f5d3f52 100644
--- a/types/store_test.go
+++ b/types/store_test.go
@@ -18,6 +18,7 @@ func TestPrefixEndBytes(t *testing.T) {
 		{[]byte{byte(55), byte(200), byte(255)}, []byte{byte(55), byte(201)}},
 		{[]byte{byte(55), byte(255), byte(255)}, []byte{byte(56)}},
 		{[]byte{byte(255), byte(255), byte(255)}, nil},
+		{[]byte{byte(255)}, nil},
 		{nil, nil},
 	}