diff --git a/ansi2/src/ans.rs b/ansi2/src/ans.rs
index 8ac8043..3e3e3f3 100644
--- a/ansi2/src/ans.rs
+++ b/ansi2/src/ans.rs
@@ -86,6 +86,9 @@ mod test {
             let c1 = Canvas::new(&s, None);
             let c2 = Canvas::new(&min, None);
             assert_eq!(c1, c2);
+
+            let min2 = to_ans(&min, None, true);
+            assert_eq!(min2, min);
         }
     }
 }