diff --git a/bar.go b/bar.go
index 8d0c082..c02b257 100644
--- a/bar.go
+++ b/bar.go
@@ -465,7 +465,7 @@
 		total = b.lastState.total
 		current = b.lastState.current
 	} else {
-		ch := make(chan state)
+		ch := make(chan state, 1)
 		b.stateReqCh <- ch
 		state := <-ch
 		total = state.total