diff --git a/config.g b/config.g
index 6d2e5f3..6d0dbbe 100644
--- a/config.g
+++ b/config.g
@@ -38,8 +38,10 @@ M208 X0 Y0 Z0 S1                               ; set axis minima
 M208 X510 Y500 Z500 S0                         ; set axis maxima
 
 ; Endstops
-M574 X1 S1 P"io1.in"                           ; configure active high endstops
-M574 Y2 S1 P"io2.in"                           ; configure active high endstops
+;;M574 X1 S1 P"io1.in"                           ; configure active high endstops
+;;M574 Y2 S1 P"io2.in"                           ; configure active high endstops
+M574 X1 S1 P"!io1.in"                           ; configure active low endstops
+M574 Y2 S1 P"!io2.in"                           ; configure active low endstops
 M574 Z1 S2                                     ; configure Z-probe endstop for low end on Z
 
 M671 X-4.5:150:304.5 Y-4.52:305:-4.52 S5       ; define positions of Z leadscrews or bed levelling screws