diff --git a/src/tests/kits/net/Jamfile b/src/tests/kits/net/Jamfile
index c541db9351..518eda6dd3 100644
--- a/src/tests/kits/net/Jamfile
+++ b/src/tests/kits/net/Jamfile
@@ -35,6 +35,7 @@ SimpleTest tcp_tester :
 	# tcp
 	tcp.cpp
 	TCPConnection.cpp
+	BufferQueue.cpp
 
 	# misc
 	argv.c
@@ -44,7 +45,7 @@ SimpleTest tcp_tester :
 ;
 
 SEARCH on [ FGristFiles 
-		tcp.cpp TCPConnection.cpp
+		tcp.cpp TCPConnection.cpp BufferQueue.cpp
 	] = [ FDirName $(HAIKU_TOP) src add-ons kernel network protocols tcp ] ;
 
 SEARCH on [ FGristFiles 
diff --git a/src/tests/kits/net/tcp_tester.cpp b/src/tests/kits/net/tcp_tester.cpp
index 7a9aa5c343..50eae530c0 100644
--- a/src/tests/kits/net/tcp_tester.cpp
+++ b/src/tests/kits/net/tcp_tester.cpp
@@ -209,10 +209,10 @@ socket_create(int family, int type, int protocol, net_socket **_socket)
 		goto err1;
 
 	// set defaults (may be overridden by the protocols)
-	socket->send.buffer_size = 65536;
+	socket->send.buffer_size = 65535;
 	socket->send.low_water_mark = 1;
 	socket->send.timeout = B_INFINITE_TIMEOUT;
-	socket->receive.buffer_size = 65536;
+	socket->receive.buffer_size = 65535;
 	socket->receive.low_water_mark = 1;
 	socket->receive.timeout = B_INFINITE_TIMEOUT;
 
@@ -751,7 +751,8 @@ domain_get_domain(net_protocol *protocol)
 size_t
 domain_get_mtu(net_protocol *protocol, const struct sockaddr *address)
 {
-	return 1500;
+	return 1480;
+		// 1500 ethernet - IPv4 header
 }