diff --git a/java/src/jmri/jmrix/lenz/XNetTurnout.java b/java/src/jmri/jmrix/lenz/XNetTurnout.java
index fc41dfb1d53..67cfe53b61e 100644
--- a/java/src/jmri/jmrix/lenz/XNetTurnout.java
+++ b/java/src/jmri/jmrix/lenz/XNetTurnout.java
@@ -350,7 +350,7 @@ public synchronized void message(XNetReply l) {
      * Listen for the messages to the LI100/LI101.
      */
     @Override
-    public void message(XNetMessage l) {
+    public synchronized void message(XNetMessage l) {
         log.debug("received outgoing message {} for turnout {}",l,getSystemName());
         // we want to verify this is the last message we sent
         // so use == not .equals