diff --git a/bar.go b/bar.go
index 7a91814..4d4a4da 100644
--- a/bar.go
+++ b/bar.go
@@ -418,6 +418,8 @@
 		case <-b.ctx.Done():
 			decoratorsOnShutdown(bs.decorators[0])
 			decoratorsOnShutdown(bs.decorators[1])
+			// bar can be aborted by canceling parent ctx
+			// without actually calling b.Abort
 			bs.aborted = !bs.completed()
 			b.bs = bs
 			close(b.bsOk)