diff --git a/src/yggdrasil/switch.go b/src/yggdrasil/switch.go
index f3c9512..10c9563 100644
--- a/src/yggdrasil/switch.go
+++ b/src/yggdrasil/switch.go
@@ -186,7 +186,9 @@ func (t *switchTable) init(core *Core) {
 	now := time.Now()
 	t.core = core
 	t.reconfigure = make(chan bool, 1)
+	t.core.configMutex.RLock()
 	t.key = t.core.sigPub
+	t.core.configMutex.RUnlock()
 	locator := switchLocator{root: t.key, tstamp: now.Unix()}
 	peers := make(map[switchPort]peerInfo)
 	t.data = switchData{locator: locator, peers: peers}
diff --git a/src/yggdrasil/tcp.go b/src/yggdrasil/tcp.go
index c986dc6..ad50d78 100644
--- a/src/yggdrasil/tcp.go
+++ b/src/yggdrasil/tcp.go
@@ -83,8 +83,10 @@ func (iface *tcpInterface) connectSOCKS(socksaddr, peeraddr string) {
 // Initializes the struct.
 func (iface *tcpInterface) init(core *Core) (err error) {
 	iface.core = core
+	iface.core.configMutex.RLock()
 	iface.tcp_addr = iface.core.config.Listen
 	iface.tcp_timeout = time.Duration(iface.core.config.ReadTimeout) * time.Millisecond
+	iface.core.configMutex.RUnlock()
 	if iface.tcp_timeout >= 0 && iface.tcp_timeout < default_tcp_timeout {
 		iface.tcp_timeout = default_tcp_timeout
 	}