Index: kernel/generic/include/ipc/ipc.h
===================================================================
--- kernel/generic/include/ipc/ipc.h	(revision 3422fb6a2a8e483c3294e3bfbd50bd1dc755217c)
+++ kernel/generic/include/ipc/ipc.h	(revision 866a8f3deaab5e04617959fb817b61944d887177)
@@ -42,4 +42,5 @@
 #include <abi/proc/task.h>
 #include <typedefs.h>
+#include <mm/slab.h>
 
 struct answerbox;
@@ -166,4 +167,6 @@
 } call_t;
 
+extern slab_cache_t *phone_slab;
+
 extern answerbox_t *ipc_phone_0;