diff --git a/printer.cfg b/printer.cfg
index c1ea93b..06f8364 100644
--- a/printer.cfg
+++ b/printer.cfg
@@ -106,6 +106,7 @@ sensor_pin: PC5
 min_temp: 0
 max_temp: 300
 max_extrude_only_distance: 150.0
+max_extrude_cross_section: 5 # NOTE Uncomment this line if you intend on using KAMP purge
 pressure_advance: 0.0435 # 0.0465 # 0.044
 
 [tmc2209 extruder]