diff --git a/lib/bcoin/pool.js b/lib/bcoin/pool.js
index c1d206e7..9ea130b9 100644
--- a/lib/bcoin/pool.js
+++ b/lib/bcoin/pool.js
@@ -430,7 +430,7 @@ Pool.prototype._addPeer = function _addPeer(backoff) {
 
   peer.on('ack', function() {
     if (self.options.fullNode) {
-      if (self.peers.block.length >= self.size)
+      if (self.peers.block.length >= Math.min(5, self.size))
         self.startSync();
     }
   });