diff --git a/src/main/java/org/tron/p2p/connection/ChannelManager.java b/src/main/java/org/tron/p2p/connection/ChannelManager.java
index cc7f018..975889d 100644
--- a/src/main/java/org/tron/p2p/connection/ChannelManager.java
+++ b/src/main/java/org/tron/p2p/connection/ChannelManager.java
@@ -112,7 +112,7 @@ public static synchronized DisconnectCode processPeer(Channel channel) {
 
     if (!channel.isActive() && !channel.isTrustPeer()) {
 
-      if(!Parameter.p2pConfig.isDiscoverEnable() && channels.size()){
+      if(!Parameter.p2pConfig.isDiscoverEnable() && channels.size() > 0){
         log.info("Discover off, disconnected with {}", channel);
         return DisconnectCode.TOO_MANY_PEERS;
       }