diff --git a/activemq-core/src/main/java/org/apache/activemq/transport/InactivityMonitor.java b/activemq-core/src/main/java/org/apache/activemq/transport/InactivityMonitor.java
index 67133a5c7c..dfb2f55b9b 100755
--- a/activemq-core/src/main/java/org/apache/activemq/transport/InactivityMonitor.java
+++ b/activemq-core/src/main/java/org/apache/activemq/transport/InactivityMonitor.java
@@ -154,9 +154,7 @@ public class InactivityMonitor extends TransportFilter {
         if (monitorStarted.get()) {
             stopMonitorThreads();
         }
-        synchronized (readChecker) {
-            transportListener.onException(error);
-        }
+        transportListener.onException(error);
     }
 
     private synchronized void startMonitorThreads() throws IOException {