diff --git a/tools/ping/server/ndn-ping-server.cpp b/tools/ping/server/ndn-ping-server.cpp
index 998c40d..a642ed1 100644
--- a/tools/ping/server/ndn-ping-server.cpp
+++ b/tools/ping/server/ndn-ping-server.cpp
@@ -86,6 +86,7 @@
   options.shouldLimitSatisfied = false;
   options.nMaxPings = 0;
   options.shouldPrintTimestamp = false;
+  options.payloadSize = 0;
 
   namespace po = boost::program_options;
 
@@ -98,6 +99,7 @@
                    std::to_string(getMinimumFreshnessPeriod().count()) + " ms)").c_str())
     ("satisfy,p", po::value<int>(&options.nMaxPings), "set maximum number of pings to be satisfied")
     ("timestamp,t", "log timestamp with responses")
+    ("size,s", po::value<int>(&options.payloadSize), "specify size of response payload")
   ;
   po::options_description hiddenOptDesc("Hidden options");
   hiddenOptDesc.add_options()
@@ -154,6 +156,13 @@
     if (optVm.count("timestamp") > 0) {
       options.shouldPrintTimestamp = true;
     }
+
+    if (optVm.count("size") > 0) {
+      if (options.payloadSize < 0) {
+        std::cerr << "ERROR: Payload size must be greater than or equal to 0" << std::endl;
+        usage(visibleOptDesc);
+      }
+    }
   }
   catch (const po::error& e) {
     std::cerr << "ERROR: " << e.what() << std::endl;