diff --git a/config/printer-tronxy-x5sa-pro-2020.cfg b/config/printer-tronxy-x5sa-pro-2020.cfg
index 63af6392..b09fffc1 100644
--- a/config/printer-tronxy-x5sa-pro-2020.cfg
+++ b/config/printer-tronxy-x5sa-pro-2020.cfg
@@ -112,7 +112,7 @@ pin: PD6
 pause_on_runout: True
 runout_gcode:
   M25
-switch_pin: PA15
+switch_pin: !PA15
 
 [output_pin beeper]
 pin: PB0