diff --git a/examples/ndn-zipf-mandelbrot.cpp b/examples/ndn-zipf-mandelbrot.cpp
index 596a219..8ebeccd 100644
--- a/examples/ndn-zipf-mandelbrot.cpp
+++ b/examples/ndn-zipf-mandelbrot.cpp
@@ -58,7 +58,7 @@
   // Setting default parameters for PointToPoint links and channels
   Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("1Mbps"));
   Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("1ms"));
-  Config::SetDefault("ns3::DropTailQueue::MaxPackets", StringValue("10"));
+  Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(10));
 
   // Read optional command-line parameters (e.g., enable visualizer with ./waf --run=<> --visualize
   CommandLine cmd;