Index: errai-bus/src/main/java/org/jboss/errai/bus/client/framework/ClientMessageBusImpl.java
===================================================================
diff -u -N -r0ef46517398ace1156e4070893f7a9c7af19898e -r37f27e57cc289bbb14f787b76e975688a8928c04
--- errai-bus/src/main/java/org/jboss/errai/bus/client/framework/ClientMessageBusImpl.java	(.../ClientMessageBusImpl.java)	(revision 0ef46517398ace1156e4070893f7a9c7af19898e)
+++ errai-bus/src/main/java/org/jboss/errai/bus/client/framework/ClientMessageBusImpl.java	(.../ClientMessageBusImpl.java)	(revision 37f27e57cc289bbb14f787b76e975688a8928c04)
@@ -29,6 +29,7 @@
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -188,7 +189,7 @@
       }
     }
 
-    Map<String, TransportHandler> m = new HashMap<String, TransportHandler>();
+    Map<String, TransportHandler> m = new LinkedHashMap<String, TransportHandler>();
     m.put(Capabilities.WebSockets.name(), new WebsocketHandler(transportToBusCallback, ClientMessageBusImpl.this));
     m.put(Capabilities.SSE.name(), new SSEHandler(transportToBusCallback, ClientMessageBusImpl.this));
     m.put(Capabilities.LongPolling.name(),
Index: errai-bus/src/test/java/org/jboss/errai/bus/client/tests/BusTransportHandlerTest.java
===================================================================
diff -u -N
--- errai-bus/src/test/java/org/jboss/errai/bus/client/tests/BusTransportHandlerTest.java	(revision 0)
+++ errai-bus/src/test/java/org/jboss/errai/bus/client/tests/BusTransportHandlerTest.java	(revision 37f27e57cc289bbb14f787b76e975688a8928c04)
@@ -0,0 +1,54 @@
+package org.jboss.errai.bus.client.tests;
+
+import java.util.Collection;
+
+import org.jboss.errai.bus.client.ErraiBus;
+import org.jboss.errai.bus.client.framework.ClientMessageBusImpl;
+import org.jboss.errai.bus.client.framework.transports.TransportHandler;
+
+public class BusTransportHandlerTest extends AbstractErraiTest {
+
+  @Override
+  public String getModuleName() {
+    return "org.jboss.errai.bus.ErraiBusTests";
+  }
+
+  public void testTransportHandlerPriority() {
+    runAfterInit(new Runnable() {
+      @Override
+      public void run() {
+        ClientMessageBusImpl bus = (ClientMessageBusImpl) ErraiBus.get();
+        Collection<TransportHandler> handlers = bus.getAllAvailableHandlers();
+        int webSocketHandlerPriority = indexOf(handlers, "WebSockets");
+        int sseHandlerPriority = indexOf(handlers, "HTTP + Server-Sent Events");
+        int longPollingHandlerPriority = indexOf(handlers, "HTTP Long Polling");;
+        int shortPollingHandlerPriority = indexOf(handlers, "HTTP Short Polling");;
+
+        System.out.println("Handler priorities:" +
+        		" " + webSocketHandlerPriority +
+        		" " + sseHandlerPriority +
+        		" " + longPollingHandlerPriority +
+        		" " + shortPollingHandlerPriority);
+
+        assertTrue(webSocketHandlerPriority < sseHandlerPriority);
+        assertTrue(sseHandlerPriority < longPollingHandlerPriority);
+        assertTrue(longPollingHandlerPriority < shortPollingHandlerPriority);
+        finishTest();
+      }
+    });
+
+    delayTestFinish(30000);
+  }
+
+  private static int indexOf(Collection<TransportHandler> handlers, String type) {
+    int i = 0;
+    for (TransportHandler handler : handlers) {
+      if (handler.getStatistics().getTransportDescription().equals(type)) {
+        return i;
+      }
+      i++;
+    }
+    fail("Couldn't find bus transport type \"" + type + "\"");
+    return -1; // NOTREACHED
+  }
+}