diff --git a/p2p/pex/pex_reactor_test.go b/p2p/pex/pex_reactor_test.go
index 38aa8405..68443e74 100644
--- a/p2p/pex/pex_reactor_test.go
+++ b/p2p/pex/pex_reactor_test.go
@@ -73,7 +73,7 @@ func TestPEXReactorRunning(t *testing.T) {
 
 	// create switches
 	for i := 0; i < N; i++ {
-		switches[i] = p2p.MakeSwitch(config, i, "127.0.0.1", "123.123.123", func(i int, sw *p2p.Switch) *p2p.Switch {
+		switches[i] = p2p.MakeSwitch(config, i, "127.0.0.2", "123.123.123", func(i int, sw *p2p.Switch) *p2p.Switch {
 			books[i] = NewAddrBook(filepath.Join(dir, fmt.Sprintf("addrbook%d.json", i)), false)
 			books[i].SetLogger(logger.With("pex", i))
 			sw.SetAddrBook(books[i])
diff --git a/p2p/switch_test.go b/p2p/switch_test.go
index 14b01829..2c59d13e 100644
--- a/p2p/switch_test.go
+++ b/p2p/switch_test.go
@@ -322,7 +322,7 @@ func TestSwitchReconnectsToPersistentPeer(t *testing.T) {
 		Config:  DefaultPeerConfig(),
 		// Use different interface to prevent duplicate IP filter, this will break
 		// beyond two peers.
-		listenAddr: "0.0.0.0:0",
+		listenAddr: "127.0.0.2:0",
 	}
 	rp.Start()
 	defer rp.Stop()