diff --git a/include/microkernel/entries.h b/include/microkernel/entries.h
index 8e31c834496..31f7f64fbde 100644
--- a/include/microkernel/entries.h
+++ b/include/microkernel/entries.h
@@ -69,7 +69,7 @@ extern void K_deqreq(struct k_args *);
 extern void K_deqrpl(struct k_args *);
 extern void K_queue(struct k_args *);
 extern void K_sendreq(struct k_args *);
-extern void K_sendrpl(struct k_args *);
+extern void _k_mbox_send_reply(struct k_args *);
 extern void _k_mbox_send_ack(struct k_args *);
 extern void K_senddata(struct k_args *);
 extern void K_recvreq(struct k_args *);
diff --git a/kernel/microkernel/include/kmail.h b/kernel/microkernel/include/kmail.h
index bf9623b984d..e7b0185db77 100644
--- a/kernel/microkernel/include/kmail.h
+++ b/kernel/microkernel/include/kmail.h
@@ -51,7 +51,7 @@
 
 /* externs */
 
-extern void K_sendrpl(struct k_args *Writer);
+extern void _k_mbox_send_reply(struct k_args *Writer);
 extern void K_sendreq(struct k_args *Writer);
 extern void _k_mbox_send_ack(struct k_args *Writer);
 extern void K_recvack(struct k_args *Reader);
diff --git a/kernel/microkernel/k_mbox.c b/kernel/microkernel/k_mbox.c
index c3ffe8d2c58..51935c73bae 100644
--- a/kernel/microkernel/k_mbox.c
+++ b/kernel/microkernel/k_mbox.c
@@ -296,12 +296,12 @@ void _k_mbox_send_ack(struct k_args *pCopyWriter)
 
 /*******************************************************************************
 *
-* K_sendrpl - process the timeout for a mailbox send request
+* _k_mbox_send_reply - process the timeout for a mailbox send request
 *
 * RETURNS: N/A
 */
 
-void K_sendrpl(struct k_args *pCopyWriter)
+void _k_mbox_send_reply(struct k_args *pCopyWriter)
 {
 	FREETIMER(pCopyWriter->Time.timer);
 	REMOVE_ELM(pCopyWriter);
diff --git a/scripts/sysgen.py b/scripts/sysgen.py
index c7586808c17..fdcdf0c84ef 100755
--- a/scripts/sysgen.py
+++ b/scripts/sysgen.py
@@ -787,7 +787,7 @@ def kernel_main_c_kernel_services():
 "/* 30 */ K_deqrpl,",               # depends on FIFOs and timers
 "/* 31 */ K_queue,",                # depends on FIFOs
 "/* 32 */ K_sendreq,",              # depends on mailboxes
-"/* 33 */ K_sendrpl,",              # depends on mailboxes and timers
+"/* 33 */ _k_mbox_send_reply,",     # depends on mailboxes and timers
 "/* 34 */ _k_mbox_send_ack,",       # depends on mailboxes
 "/* 35 */ K_senddata,",             # depends on mailboxes
 "/* 36 */ K_recvreq,",              # depends on mailboxes