diff --git a/examples/ndn-grid.cpp b/examples/ndn-grid.cpp
index bf4d566..6027a0d 100644
--- a/examples/ndn-grid.cpp
+++ b/examples/ndn-grid.cpp
@@ -57,7 +57,7 @@
   // Setting default parameters for PointToPoint links and channels
   Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("1Mbps"));
   Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-  Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(10));
+  Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("10p"));
 
   // Read optional command-line parameters (e.g., enable visualizer with ./waf --run=<> --visualize
   CommandLine cmd;