diff --git a/build/gcdfirm/sdmc-launcher/ARM7/main.c b/build/gcdfirm/sdmc-launcher/ARM7/main.c
index 0df7d14c..8da659bc 100644
--- a/build/gcdfirm/sdmc-launcher/ARM7/main.c
+++ b/build/gcdfirm/sdmc-launcher/ARM7/main.c
@@ -322,6 +322,7 @@ void TwlSpMain( void )
     AESi_ResetAesKeyC();
     MI_CpuClearFast( OSi_GetFromFirmAddr(), sizeof(OSFromFirmBuf) );
     FS_SetMountInfoForSrl();
+    MCUi_WriteRegister( MCU_REG_MODE_ADDR, MCU_SYSTEMMODE_TWL );   // change TWL mode
     OS_BootFromFIRM();
 
 end:
diff --git a/build/nandfirm/sdmc-launcher/ARM7/main.c b/build/nandfirm/sdmc-launcher/ARM7/main.c
index a3867317..0db0f7a4 100644
--- a/build/nandfirm/sdmc-launcher/ARM7/main.c
+++ b/build/nandfirm/sdmc-launcher/ARM7/main.c
@@ -298,6 +298,7 @@ void TwlSpMain( void )
     SYSMi_SetAESKeysForAccessControl(FALSE, rh);
     MI_CpuClearFast( OSi_GetFromFirmAddr(), sizeof(OSFromFirmBuf) );
     FS_SetMountInfoForSrl();
+    MCUi_WriteRegister( MCU_REG_MODE_ADDR, MCU_SYSTEMMODE_TWL );   // change TWL mode
     OS_BootFromFIRM();
 
 end: