diff --git a/network/peermgr.go b/network/peermgr.go
index 5571a5031..e63bd1639 100644
--- a/network/peermgr.go
+++ b/network/peermgr.go
@@ -55,7 +55,7 @@ func (mgr *peerMgr) Start() {
 	mgr.CheckConnectivity()
 
 	go func() {
-		ticker := time.NewTicker(20 * time.Second)
+		ticker := time.NewTicker(60 * time.Second)
 		defer ticker.Stop()
 
 		for {
@@ -153,7 +153,15 @@ func (mgr *peerMgr) CheckConnectivity() {
 
 	net := mgr.host.Network()
 
-	// Let's check if some peers are disconnected
+	// Close connections with peers that have no supported protocol.
+	for pid := range mgr.peers {
+		prtcls, _ := mgr.host.Peerstore().GetProtocols(pid)
+		if len(prtcls) == 0 {
+			_ = net.ClosePeer(pid)
+		}
+	}
+
+	// Check if some peers are disconnected
 	var connectedPeers []lp2ppeer.ID
 	for pid := range mgr.peers {
 		connectedness := net.Connectedness(pid)