diff --git a/blockchain/v0/reactor.go b/blockchain/v0/reactor.go
index 7928a1d0a..dd753f1f2 100644
--- a/blockchain/v0/reactor.go
+++ b/blockchain/v0/reactor.go
@@ -128,7 +128,9 @@ func (bcR *BlockchainReactor) SwitchToFastSync(state sm.State) error {
 
 // OnStop implements service.Service.
 func (bcR *BlockchainReactor) OnStop() {
-	bcR.pool.Stop()
+	if bcR.fastSync {
+		bcR.pool.Stop()
+	}
 }
 
 // GetChannels implements Reactor