diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index 3829946e0..bc9f763b6 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -89,6 +89,7 @@ Bugs fixed
 - Bug 2629 - Assert failure in MinstrelHtWifiManager::GetLowestIndex
 - Bug 2647 - ideal-wifi-manager-example crashes when NSS > 1
 - Bug 2655 - A-MPDU simulation using TCP sometimes fails with message "Packet has no Traffic ID"
+- Bug 2660 - TrafficControlHelper::Default should not configure internal queue sizes
 
 Known issues
 ------------
diff --git a/src/traffic-control/helper/traffic-control-helper.cc b/src/traffic-control/helper/traffic-control-helper.cc
index fc57eb1fb..48efdc2cc 100644
--- a/src/traffic-control/helper/traffic-control-helper.cc
+++ b/src/traffic-control/helper/traffic-control-helper.cc
@@ -110,8 +110,7 @@ TrafficControlHelper
 TrafficControlHelper::Default (void)
 {
   TrafficControlHelper helper;
-  uint16_t handle = helper.SetRootQueueDisc ("ns3::PfifoFastQueueDisc");
-  helper.AddInternalQueues (handle, 3, "ns3::DropTailQueue", "MaxPackets", UintegerValue (1000));
+  helper.SetRootQueueDisc ("ns3::PfifoFastQueueDisc");
   return helper;
 }