Index: uspace/lib/c/generic/fibril.c
===================================================================
--- uspace/lib/c/generic/fibril.c	(revision 110705072aaee01eaf027896a39f2fb48bff71c3)
+++ uspace/lib/c/generic/fibril.c	(revision 01029fc7e46acbe4cd80f0a678a085d214882028)
@@ -274,5 +274,5 @@
 	    FIBRIL_INITIAL_STACK_PAGES_NO * getpagesize(),
 	    AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE | AS_AREA_GUARD |
-	    AS_AREA_NORESERVE);
+	    AS_AREA_LATE_RESERVE);
 	if (fibril->stack == (void *) -1) {
 		fibril_teardown(fibril);