diff --git a/tests/unit-tests/NFD/ncc.t.cpp b/tests/unit-tests/NFD/ncc.t.cpp
index b7bd801..e53e00e 100644
--- a/tests/unit-tests/NFD/ncc.t.cpp
+++ b/tests/unit-tests/NFD/ncc.t.cpp
@@ -33,7 +33,7 @@
   {
     Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
     Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("1ms"));
-    Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(500));
+    Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("500p"));
 
       //            Creating a 3 node topology                //
       //                                                      //
diff --git a/tests/unit-tests/helper/ndn-link-control-helper.t.cpp b/tests/unit-tests/helper/ndn-link-control-helper.t.cpp
index 6abcf43..1e59f14 100644
--- a/tests/unit-tests/helper/ndn-link-control-helper.t.cpp
+++ b/tests/unit-tests/helper/ndn-link-control-helper.t.cpp
@@ -32,7 +32,7 @@
   // setting default parameters for PointToPoint links and channels
   Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
   Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-  Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(20));
+  Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("20p"));
 
   createTopology({
       {"1", "2"},
@@ -77,7 +77,7 @@
   // setting default parameters for PointToPoint links and channels
   Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
   Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-  Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(20));
+  Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("20p"));
 
   // Connecting nodes in 6 node topology:                        //
   //                                                             //
diff --git a/tests/unit-tests/helper/ndn-stack-helper.t.cpp b/tests/unit-tests/helper/ndn-stack-helper.t.cpp
index 04d5bba..2fc98b6 100644
--- a/tests/unit-tests/helper/ndn-stack-helper.t.cpp
+++ b/tests/unit-tests/helper/ndn-stack-helper.t.cpp
@@ -32,7 +32,7 @@
   // setting default parameters for PointToPoint links and channels
   Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
   Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-  Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(20));
+  Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("20p"));
 
   // Creating nodes
   NodeContainer nodes;
diff --git a/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp b/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp
index e06a93d..a539141 100644
--- a/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp
+++ b/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp
@@ -33,7 +33,7 @@
   {
     Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
     Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("1ms"));
-    Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(500));
+    Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("500p"));
 
     // Creating two 3 node topologies:                      //
     //                                                      //
diff --git a/tests/unit-tests/model/ndn-old-content-store.t.cpp b/tests/unit-tests/model/ndn-old-content-store.t.cpp
index a2919f4..c2e9c43 100644
--- a/tests/unit-tests/model/ndn-old-content-store.t.cpp
+++ b/tests/unit-tests/model/ndn-old-content-store.t.cpp
@@ -29,7 +29,7 @@
 {
   Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
   Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-  Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(20));
+  Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("20p"));
 
   getStackHelper().SetOldContentStore("ns3::ndn::cs::Random", "MaxSize", "10");
 
diff --git a/tests/unit-tests/ndn-cxx/face.t.cpp b/tests/unit-tests/ndn-cxx/face.t.cpp
index df84a30..f062728 100644
--- a/tests/unit-tests/ndn-cxx/face.t.cpp
+++ b/tests/unit-tests/ndn-cxx/face.t.cpp
@@ -38,7 +38,7 @@
   {
     Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
     Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-    Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(20));
+    Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("20p"));
 
     createTopology({{"A", "B"}});
     addRoutes({{"A", "B", "/test", 1}});
diff --git a/tests/unit-tests/utils/tracers/ndn-app-delay-tracer.t.cpp b/tests/unit-tests/utils/tracers/ndn-app-delay-tracer.t.cpp
index b981cee..953eec1 100644
--- a/tests/unit-tests/utils/tracers/ndn-app-delay-tracer.t.cpp
+++ b/tests/unit-tests/utils/tracers/ndn-app-delay-tracer.t.cpp
@@ -39,7 +39,7 @@
     // setting default parameters for PointToPoint links and channels
     Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
     Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-    Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(20));
+    Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("20p"));
 
     createTopology({
         {"1", "2"},
diff --git a/tests/unit-tests/utils/tracers/ndn-l3-rate-tracer.t.cpp b/tests/unit-tests/utils/tracers/ndn-l3-rate-tracer.t.cpp
index ae2dc8e..ef000de 100644
--- a/tests/unit-tests/utils/tracers/ndn-l3-rate-tracer.t.cpp
+++ b/tests/unit-tests/utils/tracers/ndn-l3-rate-tracer.t.cpp
@@ -39,7 +39,7 @@
     // setting default parameters for PointToPoint links and channels
     Config::SetDefault("ns3::PointToPointNetDevice::DataRate", StringValue("10Mbps"));
     Config::SetDefault("ns3::PointToPointChannel::Delay", StringValue("10ms"));
-    Config::SetDefault("ns3::QueueBase::MaxPackets", UintegerValue(20));
+    Config::SetDefault("ns3::QueueBase::MaxSize", StringValue("20p"));
 
     createTopology({
         {"1"},