diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 9b9e9610e4..c07d831f7d 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -368,7 +368,7 @@ int sd_dhcp6_client_set_address_request(sd_dhcp6_client *client, int request) {
         return 0;
 }
 
-int sd_dhcp6_client_set_transaction_id(sd_dhcp6_client *client, be32_t transaction_id) {
+int sd_dhcp6_client_set_transaction_id(sd_dhcp6_client *client, uint32_t transaction_id) {
         assert_return(client, -EINVAL);
 
         client->transaction_id = transaction_id;
diff --git a/src/systemd/sd-dhcp6-client.h b/src/systemd/sd-dhcp6-client.h
index 639339d181..43d38f5c7d 100644
--- a/src/systemd/sd-dhcp6-client.h
+++ b/src/systemd/sd-dhcp6-client.h
@@ -25,7 +25,6 @@
 
 #include "sd-dhcp6-lease.h"
 #include "sd-event.h"
-#include "sparse-endian.h"
 
 #include "_sd-common.h"
 
@@ -128,7 +127,7 @@ int sd_dhcp6_client_get_address_request(sd_dhcp6_client *client,
                                         int *request);
 int sd_dhcp6_client_set_address_request(sd_dhcp6_client *client,
                                         int request);
-int sd_dhcp6_client_set_transaction_id(sd_dhcp6_client *client, be32_t transaction_id);
+int sd_dhcp6_client_set_transaction_id(sd_dhcp6_client *client, uint32_t transaction_id);
 
 int sd_dhcp6_client_get_lease(
                 sd_dhcp6_client *client,