diff --git a/libknet/transport_loopback.c b/libknet/transport_loopback.c
index 7d49d7be..56cc7cff 100644
--- a/libknet/transport_loopback.c
+++ b/libknet/transport_loopback.c
@@ -1,85 +1,85 @@
 #include "config.h"
 
 #include <string.h>
 #include <unistd.h>
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <stdlib.h>
 #include <netinet/in.h>
 #include <netinet/ip.h>
 #include <netinet/ip_icmp.h>
 
 #include "libknet.h"
 #include "compat.h"
 #include "host.h"
 #include "link.h"
 #include "logging.h"
 #include "common.h"
 #include "transports.h"
 #include "threads_common.h"
 
 #define KNET_PMTUD_LOOPBACK_OVERHEAD 0
 
 /* This is just a file of empty calls as the actual loopback is in threads_tx.c as a special case
    when receiving a packet from the localhost */
 
 
 static int loopback_transport_link_set_config(knet_handle_t knet_h, struct knet_link *kn_link)
 {
 	return 0;
 }
 
 static int loopback_transport_link_clear_config(knet_handle_t knet_h, struct knet_link *kn_link)
 {
 	return 0;
 }
 
 static int loopback_transport_free(knet_handle_t knet_h)
 {
 	return 0;
 }
 
 static int loopback_transport_init(knet_handle_t knet_h)
 {
 	return 0;
 }
 
 static int loopback_transport_rx_sock_error(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno)
 {
 	return 0;
 }
 
 static int loopback_transport_tx_sock_error(knet_handle_t knet_h, int sockfd, int recv_err, int recv_errno)
 {
 	return 0;
 }
 
 static int loopback_transport_rx_is_data(knet_handle_t knet_h, int sockfd, struct knet_mmsghdr *msg)
 {
 	return 0;
 }
 
 static int loopback_transport_link_dyn_connect(knet_handle_t knet_h, int sockfd, struct knet_link *kn_link)
 {
 	return 0;
 }
 
 static knet_transport_ops_t loopback_transport_ops = {
 	.transport_name = "LOOPBACK",
 	.transport_id = KNET_TRANSPORT_LOOPBACK,
-	.transport_mtu_overhead = 0,
+	.transport_mtu_overhead = KNET_PMTUD_LOOPBACK_OVERHEAD,
 	.transport_init = loopback_transport_init,
 	.transport_free = loopback_transport_free,
 	.transport_link_set_config = loopback_transport_link_set_config,
 	.transport_link_clear_config = loopback_transport_link_clear_config,
 	.transport_link_dyn_connect = loopback_transport_link_dyn_connect,
 	.transport_rx_sock_error = loopback_transport_rx_sock_error,
 	.transport_tx_sock_error = loopback_transport_tx_sock_error,
 	.transport_rx_is_data = loopback_transport_rx_is_data,
 };
 
 knet_transport_ops_t *get_loopback_transport()
 {
 	return &loopback_transport_ops;
 }