diff --git a/envelope.asy b/envelope.asy
index f927b3c..32a7068 100644
--- a/envelope.asy
+++ b/envelope.asy
@@ -30,7 +30,7 @@ if (with_labels) draw(box((0,0), (210,210)), p=red);
 
 pair envc = (sqsz/2, sqsz/2);
 // Write a paper type to the image?
-label(rotate(45)*scale(4)*Label(envfmt, envc, p=gray));
+if (with_labels) label(rotate(45)*scale(4)*Label(envfmt, envc, p=gray));
 
 pair corn_vec = unit((1,1)) * (envw/2) + unit((1,-1)) * (envh/2);
 pair flip(pair p) {