Index: uspace/srv/hid/fb/fb.c
===================================================================
--- uspace/srv/hid/fb/fb.c	(revision a47f52276416c12f15162cebefb4e81101e86a92)
+++ uspace/srv/hid/fb/fb.c	(revision f4a8734aba1f1f8923661a4d49e442f2eeb00e06)
@@ -305,5 +305,5 @@
 	
 	int rc = async_share_out_finalize(callid, &frontbuf->data);
-	if ((rc != EOK) || (frontbuf->data == (void *) -1)) {
+	if ((rc != EOK) || (frontbuf->data == AS_MAP_FAILED)) {
 		free(frontbuf);
 		async_answer_0(iid, ENOMEM);
@@ -348,5 +348,5 @@
 	
 	int rc = async_share_out_finalize(callid, &imagemap->data);
-	if ((rc != EOK) || (imagemap->data == (void *) -1)) {
+	if ((rc != EOK) || (imagemap->data == AS_MAP_FAILED)) {
 		free(imagemap);
 		async_answer_0(iid, ENOMEM);