Index: uspace/srv/hid/fb/fb.c
===================================================================
--- uspace/srv/hid/fb/fb.c	(revision 3123d2a20f29173fb6bad68dd2992ef22dac47de)
+++ uspace/srv/hid/fb/fb.c	(revision 0bbd13e274302c7c89dd4ea7cad7dbcc3ecfc524)
@@ -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);