diff --git a/tests/other/ndn-test.cpp b/tests/other/ndn-test.cpp
index 4095f54..c720bd6 100644
--- a/tests/other/ndn-test.cpp
+++ b/tests/other/ndn-test.cpp
@@ -159,7 +159,7 @@
   // setting default parameters for PointToPoint links and channels
   Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10000Mbps"));
   Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-  Config::SetDefault("ns3::DropTailQueue::MaxPackets", StringValue("20"));
+  Config::SetDefault("ns3::DropTailQueue::MaxSize", StringValue("20p"));
 
   // Read optional command-line parameters (e.g., enable visualizer with ./waf --run=<> --visualize
   CommandLine cmd;