Index: uspace/app/display-cfg/test/seats.c
===================================================================
--- uspace/app/display-cfg/test/seats.c	(revision 61f28c405b3c98cda69d286db31ae3b984b11cfd)
+++ uspace/app/display-cfg/test/seats.c	(revision d3dd170faab53f2af9eba1f69b66b62b9f580fd3)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2023 Jiri Svoboda
+ * Copyright (c) 2025 Jiri Svoboda
  * All rights reserved.
  *
@@ -102,5 +102,6 @@
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);
 
-	rc = loc_service_register(srv, test_dispcfg_svc, &sid);
+	rc = loc_service_register(srv, test_dispcfg_svc, fallback_port_id,
+	    &sid);
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);
 
Index: uspace/app/taskbar-cfg/test/startmenu.c
===================================================================
--- uspace/app/taskbar-cfg/test/startmenu.c	(revision 61f28c405b3c98cda69d286db31ae3b984b11cfd)
+++ uspace/app/taskbar-cfg/test/startmenu.c	(revision d3dd170faab53f2af9eba1f69b66b62b9f580fd3)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2023 Jiri Svoboda
+ * Copyright (c) 2025 Jiri Svoboda
  * All rights reserved.
  *
@@ -102,5 +102,6 @@
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);
 
-	rc = loc_service_register(srv, test_dispcfg_svc, &sid);
+	rc = loc_service_register(srv, test_dispcfg_svc, fallback_port_id,
+	    &sid);
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);
 
Index: uspace/app/taskbar/test/wndlist.c
===================================================================
--- uspace/app/taskbar/test/wndlist.c	(revision 61f28c405b3c98cda69d286db31ae3b984b11cfd)
+++ uspace/app/taskbar/test/wndlist.c	(revision d3dd170faab53f2af9eba1f69b66b62b9f580fd3)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2023 Jiri Svoboda
+ * Copyright (c) 2025 Jiri Svoboda
  * All rights reserved.
  *
@@ -149,5 +149,5 @@
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);
 
-	rc = loc_service_register(srv, test_wndmgt_svc, &sid);
+	rc = loc_service_register(srv, test_wndmgt_svc, fallback_port_id, &sid);
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);
 
Index: uspace/app/terminal/terminal.c
===================================================================
--- uspace/app/terminal/terminal.c	(revision 61f28c405b3c98cda69d286db31ae3b984b11cfd)
+++ uspace/app/terminal/terminal.c	(revision d3dd170faab53f2af9eba1f69b66b62b9f580fd3)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2024 Jiri Svoboda
+ * Copyright (c) 2025 Jiri Svoboda
  * Copyright (c) 2012 Petr Koupy
  * All rights reserved.
@@ -1115,5 +1115,5 @@
 	    task_get_id());
 
-	rc = loc_service_register(term->srv, vc, &term->dsid);
+	rc = loc_service_register(term->srv, vc, fallback_port_id, &term->dsid);
 	if (rc != EOK) {
 		printf("Error registering service.\n");