diff --git a/grbl/config.h b/grbl/config.h
index ed7a45f..866a512 100644
--- a/grbl/config.h
+++ b/grbl/config.h
@@ -187,7 +187,7 @@
 // immediately forces a feed hold and then safely de-energizes the machine. Resuming is blocked until
 // the safety door is re-engaged. When it is, Grbl will re-energize the machine and then resume on the
 // previous tool path, as if nothing happened.
-#define ENABLE_SAFETY_DOOR_INPUT_PIN // Default disabled. Uncomment to enable.
+//#define ENABLE_SAFETY_DOOR_INPUT_PIN // Default disabled. Uncomment to enable.
 
 // After the safety door switch has been toggled and restored, this setting sets the power-up delay
 // between restoring the spindle and coolant and resuming the cycle.