Index: uspace/lib/c/test/loc.c
===================================================================
--- uspace/lib/c/test/loc.c	(revision b31323f46d9857fd4d01382a6541e53d03de5c11)
+++ uspace/lib/c/test/loc.c	(revision 2e9f28483e3e3832adf6f08bb34a173e2fbf6a40)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2023 Jiri Svoboda
+ * Copyright (c) 2025 Jiri Svoboda
  * All rights reserved.
  *
@@ -51,9 +51,11 @@
 
 	// XXX Without a unique name this is not reentrant
-	rc = loc_service_register(sa, "test/libc-service-a", &svca);
+	rc = loc_service_register(sa, "test/libc-service-a",
+	    fallback_port_id, &svca);
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);
 
 	// XXX Without a unique name this is not reentrant
-	rc = loc_service_register(sb, "test/libc-service-b", &svcb);
+	rc = loc_service_register(sb, "test/libc-service-b",
+	    fallback_port_id, &svcb);
 	PCUT_ASSERT_ERRNO_VAL(EOK, rc);