Index: kernel/generic/src/ipc/kbox.c
===================================================================
--- kernel/generic/src/ipc/kbox.c	(revision a064d4fc00192ecc7d42d04ecfb3474585fef055)
+++ kernel/generic/src/ipc/kbox.c	(revision 515f1b18a4a380af6a2feb75e9d0349bdddfb01c)
@@ -246,6 +246,6 @@
 		}
 
-		task->kb.thread = thread_ref(kb_thread);
-		thread_ready(kb_thread);
+		task->kb.thread = kb_thread;
+		thread_start(kb_thread);
 	}