Index: uspace/srv/hid/compositor/compositor.c
===================================================================
--- uspace/srv/hid/compositor/compositor.c	(revision 889cdb1c2046af9d31d314fa691773fa2e4f9119)
+++ uspace/srv/hid/compositor/compositor.c	(revision 676900501376128cbb87ed9ea866e1bfbb52a5db)
@@ -918,5 +918,5 @@
 	/* Allocate resources for new window and register it to the location service. */
 	if (service_id == winreg_id) {
-		async_answer_0(icall, EOK);
+		async_answer_5(icall, EOK, 0, 0, 0, 0, async_get_label());
 
 		async_get_call(&call);
@@ -997,5 +997,5 @@
 
 	if (win) {
-		async_answer_0(icall, EOK);
+		async_answer_5(icall, EOK, 0, 0, 0, 0, async_get_label());
 	} else {
 		async_answer_0(icall, EINVAL);