diff --git a/progress.go b/progress.go
index 64b6aec..a3d2b2b 100644
--- a/progress.go
+++ b/progress.go
@@ -292,7 +292,7 @@
 			delete(bm, b)
 			s.heapUpdated = true
 		} else if s.popCompleted {
-			if !b.noPop {
+			if b := b; !b.noPop {
 				defer func() {
 					s.barPopQueue = append(s.barPopQueue, b)
 				}()