diff --git a/src/net/sf/briar/plugins/modem/ModemPlugin.java b/src/net/sf/briar/plugins/modem/ModemPlugin.java
index 435f10a4a199cd5cc954328e154a6dbdfd637360..6fa94de43229253a14c5c0b928294350bb47d4b2 100644
--- a/src/net/sf/briar/plugins/modem/ModemPlugin.java
+++ b/src/net/sf/briar/plugins/modem/ModemPlugin.java
@@ -80,13 +80,11 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 		return false;
 	}
 
-	// Synchronized to avoid a race condition with resetModem()
-	public synchronized void stop() {
+	public void stop() {
 		running = false;
 	}
 
-	// Synchronized to avoid a race condition with stop()
-	private synchronized boolean resetModem() {
+	private boolean resetModem() {
 		if(!running) return false;
 		for(String portName : SerialPortList.getPortNames()) {
 			modem = modemFactory.createModem(this, portName);