Index: uspace/drv/test2/test2.c
===================================================================
--- uspace/drv/test2/test2.c	(revision ffa2c8ef45390c01f3f4be4827bcd41c32f7951c)
+++ uspace/drv/test2/test2.c	(revision fc4788545f82a1def816a3bc5940db8c6f0c1a9f)
@@ -103,4 +103,8 @@
 	if (dev->parent == NULL) {
 		fid_t postpone = fibril_create(postponed_birth, dev);
+		if (postpone == 0) {
+			printf(NAME ": fibril_create() error\n");
+			return ENOMEM;
+		}
 		fibril_add_ready(postpone);
 	} else {