diff --git a/demos/STM8S-STM8S208-RC/ch.rapp b/demos/STM8S-STM8S208-RC/ch.rapp
index a1ba8f5c9..35adac620 100644
--- a/demos/STM8S-STM8S208-RC/ch.rapp
+++ b/demos/STM8S-STM8S208-RC/ch.rapp
@@ -10,15 +10,15 @@
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@@ -34,15 +34,15 @@
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@@ -53,17 +53,17 @@
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@@ -78,11 +78,11 @@
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diff --git a/os/ports/RC/STM8/chcoreasm.asm b/os/ports/RC/STM8/chcoreasm.asm
deleted file mode 100644
index e5cfda1fb..000000000
--- a/os/ports/RC/STM8/chcoreasm.asm
+++ /dev/null
@@ -1,44 +0,0 @@
-; ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
-;
-; This file is part of ChibiOS/RT.
-;
-; ChibiOS/RT is free software; you can redistribute it and/or modify
-; it under the terms of the GNU General Public License as published by
-; the Free Software Foundation; either version 3 of the License, or
-; (at your option) any later version.
-
-; ChibiOS/RT is distributed in the hope that it will be useful,
-; but WITHOUT ANY WARRANTY; without even the implied warranty of
-; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-; GNU General Public License for more details.
-
-; You should have received a copy of the GNU General Public License
-; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-        ?PR??_THREAD_START?CHCOREASM SEGMENT CODE
-
-        RSEG        ?PR??_THREAD_START?CHCOREASM
-
-        EXTRN       PAGE0(rlist)
-
-        ; Performs a context switch between two threads.
-        ; In this port swapping the stack pointers is enough, there are
-        ; no registers to be preserved across function calls and the
-        ; program counter is already in the stack.
-        PUBLIC      ?_port_switch
-?_port_switch:
-        LDW         Y,SP
-        LDW         (005H,X),Y      ; SP saved in otp->p_ctx.sp
-;        LDW         X,(003H,SP)     ; ntp
-        LDW         X,rlist + 0DH   ; rlist.r_current (currp)
-        LDW         X,(005H,X)
-        LDW         SP,X            ; SP restored from currp->p_ctx.sp
-        RET
-
-        PUBLIC      ?_port_thread_start
-?_port_thread_start:
-        RIM
-        POPW        X
-        RET
-
-        end