diff --git a/src/tests/kits/net/tcp_shell/BufferQueueTest.cpp b/src/tests/kits/net/tcp_shell/BufferQueueTest.cpp
index 51a2c1ff5d..5fc5927955 100644
--- a/src/tests/kits/net/tcp_shell/BufferQueueTest.cpp
+++ b/src/tests/kits/net/tcp_shell/BufferQueueTest.cpp
@@ -128,6 +128,9 @@ main()
 	add(3, 999);
 	dump("add 3");
 
+	add(60, 540);
+	dump("add at the end of previous data");
+
 	put_module(NET_BUFFER_MODULE_NAME);
 	return 0;
 }