diff --git a/src/bridge/model/bridge-net-device.cc b/src/bridge/model/bridge-net-device.cc
index c5343f450..47de15667 100644
--- a/src/bridge/model/bridge-net-device.cc
+++ b/src/bridge/model/bridge-net-device.cc
@@ -49,7 +49,7 @@ BridgeNetDevice::GetTypeId (void)
                    MakeBooleanChecker ())
     .AddAttribute ("ExpirationTime",
                    "Time it takes for learned MAC state entry to expire.",
-                   TimeValue (Seconds (30)),
+                   TimeValue (Seconds (300)),
                    MakeTimeAccessor (&BridgeNetDevice::m_expirationTime),
                    MakeTimeChecker ())
   ;