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-rw-r--r--tmk_core/common/chibios/bootloader.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tmk_core/common/chibios/bootloader.c b/tmk_core/common/chibios/bootloader.c
index 76d52ea608..f9514ee5f3 100644
--- a/tmk_core/common/chibios/bootloader.c
+++ b/tmk_core/common/chibios/bootloader.c
@@ -103,7 +103,8 @@ void enter_bootloader_mode_if_requested(void) {
# define SCB_AIRCR_VECTKEY_WRITEMAGIC 0x05FA0000
const uint8_t sys_reset_to_loader_magic[] = "\xff\x00\x7fRESET TO LOADER\x7f\x00\xff";
__attribute__((weak)) void bootloader_jump(void) {
- __builtin_memcpy((void *)VBAT, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic));
+ void *volatile vbat = (void *)VBAT;
+ __builtin_memcpy(vbat, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic));
// request reset
SCB->AIRCR = SCB_AIRCR_VECTKEY_WRITEMAGIC | SCB_AIRCR_SYSRESETREQ_Msk;
}