diff --git a/Keyboard-with-FPC-60pin-0.5mm.md b/Keyboard-with-FPC-60pin-0.5mm.md
index 83f0130..9d4deef 100644
--- a/Keyboard-with-FPC-60pin-0.5mm.md
+++ b/Keyboard-with-FPC-60pin-0.5mm.md
@@ -13,7 +13,7 @@ GND | 22 | GND
 data + | 18 | PA12(USB_DP)
 data - | 17 | PA11(USB_DM)
 
-can not have USB and usb-serial both ON
+can not have USB and usb-serial both ON  
 sudo stm32flash -r devterm.kbd.0.3_48mhz.bin -S 0x08000000:65536 /dev/ttyUSB0    
 srec_cat devterm.kbd.0.3_48mhz.bin -Binary -offset 0x08000000 -output devterm.kbd.0.3_48mhz.hex -Intel