diff --git a/jingle/extension/source/org/jivesoftware/smackx/jingle/nat/TransportResolver.java b/jingle/extension/source/org/jivesoftware/smackx/jingle/nat/TransportResolver.java
index b5daa86ba..baba07a51 100644
--- a/jingle/extension/source/org/jivesoftware/smackx/jingle/nat/TransportResolver.java
+++ b/jingle/extension/source/org/jivesoftware/smackx/jingle/nat/TransportResolver.java
@@ -89,7 +89,7 @@ public abstract class TransportResolver {
     public Type type = Type.rawupd;
 
     // the time, in milliseconds, before a check aborts
-    public static final int CHECK_TIMEOUT = 2000;
+    public static final int CHECK_TIMEOUT = 4000;
 
     // Listeners for events
     private final ArrayList<TransportResolverListener> listeners = new ArrayList<TransportResolverListener>();