diff --git a/chain/messagepool/messagepool.go b/chain/messagepool/messagepool.go
index def1611711a..085980f79eb 100644
--- a/chain/messagepool/messagepool.go
+++ b/chain/messagepool/messagepool.go
@@ -112,7 +112,7 @@ type MessagePoolEvtMessage struct {
 
 func init() {
 	// if the republish interval is too short compared to the pubsub timecache, adjust it
-	minInterval := pubsub.TimeCacheDuration + time.Duration(build.PropagationDelaySecs)
+	minInterval := pubsub.TimeCacheDuration + time.Duration(build.PropagationDelaySecs)*time.Second
 	if RepublishInterval < minInterval {
 		RepublishInterval = minInterval
 	}