Index: core/src/main/java/quickfix/Session.java
===================================================================
--- core/src/main/java/quickfix/Session.java	(revision 1052)
+++ core/src/main/java/quickfix/Session.java	(working copy)
@@ -2314,13 +2314,15 @@
 
     private boolean send(String messageString) {
         getLog().onOutgoing(messageString);
+        Responder responder;
         synchronized (responderSync) {
-            if (!hasResponder()) {
-                getLog().onEvent("No responder, not sending message: " + messageString);
-                return false;
-            }
-            return getResponder().send(messageString);
+            responder = this.responder;
         }
+        if (responder == null) {
+            getLog().onEvent("No responder, not sending message: " + messageString);
+            return false;
+        }
+        return responder.send(messageString);
     }
 
     private boolean isCorrectCompID(String senderCompID, String targetCompID) {