Index: kernel/generic/src/ipc/ipc.c
===================================================================
--- kernel/generic/src/ipc/ipc.c	(revision 03a8a8e368c4f45bcf4052f070b0a6cbabbdcec0)
+++ kernel/generic/src/ipc/ipc.c	(revision f3b97d11fcd4829f4c5fbcb964344d1c1738de08)
@@ -311,5 +311,5 @@
 
 		call->data.phone = phone;
-		call->data.task_id = phone->caller->taskid;
+		call->data.task_id = caller->taskid;
 	}