Index: generic/src/ipc/ipc.c
===================================================================
--- generic/src/ipc/ipc.c	(revision 5f62ef99a9c5aa3020510303c82ab8fcbfa0b83b)
+++ generic/src/ipc/ipc.c	(revision 3b05862f7b2d26301add7f960fdd87e9c37d6392)
@@ -62,4 +62,5 @@
 	memsetb((__address)call, sizeof(*call), 0);
 	call->callerbox = &TASK->answerbox;
+	call->sender = TASK;
 
 	return call;