diff --git a/common/signal/pubsub/pubsub.go b/common/signal/pubsub/pubsub.go
index cc9b87eb1..0d3d17485 100644
--- a/common/signal/pubsub/pubsub.go
+++ b/common/signal/pubsub/pubsub.go
@@ -62,7 +62,7 @@ func (s *Service) Cleanup() error {
 	}
 
 	for name, subs := range s.subs {
-		newSub := make([]*Subscriber, 0, len(s.subs))
+		newSub := make([]*Subscriber, 0, len(subs))
 		for _, sub := range subs {
 			if !sub.IsClosed() {
 				newSub = append(newSub, sub)