diff --git a/src/wifi/model/wifi-mac-queue.cc b/src/wifi/model/wifi-mac-queue.cc
index fede50a56..447013376 100644
--- a/src/wifi/model/wifi-mac-queue.cc
+++ b/src/wifi/model/wifi-mac-queue.cc
@@ -52,7 +52,7 @@ WifiMacQueue::GetTypeId (void)
                    MakeUintegerAccessor (&WifiMacQueue::m_maxSize),
                    MakeUintegerChecker<uint32_t> ())
     .AddAttribute ("MaxDelay", "If a packet stays longer than this delay in the queue, it is dropped.",
-                   TimeValue (Seconds (10.0)),
+                   TimeValue (MilliSeconds (500.0)),
                    MakeTimeAccessor (&WifiMacQueue::m_maxDelay),
                    MakeTimeChecker ())
   ;