diff --git a/resources/profiles/Prusa/filament/Prusa Generic PLA @XL.json b/resources/profiles/Prusa/filament/Prusa Generic PLA @XL.json
index f49522b506..b270dacb2c 100644
--- a/resources/profiles/Prusa/filament/Prusa Generic PLA @XL.json	
+++ b/resources/profiles/Prusa/filament/Prusa Generic PLA @XL.json	
@@ -33,7 +33,7 @@
     "ramming_line_width": "250%",
     "ramming_line_spacing": "100%",
     "filament_retract_lift_below": "0.6",
-    "filament_start_gcode": "M900 K{if nozzle_diameter[filament_extruder_id]==0.4}0.05{elsif nozzle_diameter[filament_extruder_id]==0.25}0.14{elsif nozzle_diameter[filament_extruder_id]==0.3}0.07{elsif nozzle_diameter[filament_extruder_id]==0.35}0.06{elsif nozzle_diameter[filament_extruder_id]==0.6}0.03{elsif nozzle_diameter[filament_extruder_id]==0.5}0.035{elsif nozzle_diameter[filament_extruder_id]==0.8}0.015{else}0{endif} ; Filament gcode\n{if printer_notes=~/.*(MK4IS|XLIS).*/}\nM572 S{if nozzle_diameter[filament_extruder_id]==0.4}0.036{elsif nozzle_diameter[filament_extruder_id]==0.5}0.025{elsif nozzle_diameter[filament_extruder_id]==0.6}0.02{elsif nozzle_diameter[filament_extruder_id]==0.8}0.014{elsif nozzle_diameter[filament_extruder_id]==0.25}0.12{elsif nozzle_diameter[filament_extruder_id]==0.3}0.08{else}0{endif} ; Filament gcode\n{endif}\nM142 S36 ; set heatbreak target temp",
+    "filament_start_gcode": "M900 K{if nozzle_diameter[0]==0.4}0.05{elsif nozzle_diameter[0]==0.25}0.14{elsif nozzle_diameter[0]==0.3}0.07{elsif nozzle_diameter[0]==0.35}0.06{elsif nozzle_diameter[0]==0.6}0.03{elsif nozzle_diameter[0]==0.5}0.035{elsif nozzle_diameter[0]==0.8}0.015{else}0{endif} ; Filament gcode\n\n{if printer_notes=~/.*PRINTER_MODEL_XLIS.*/}\nM572 S{if nozzle_diameter[0]==0.4}0.036{elsif nozzle_diameter[0]==0.5}0.025{elsif nozzle_diameter[0]==0.6}0.02{elsif nozzle_diameter[0]==0.8}0.014{elsif nozzle_diameter[0]==0.25}0.12{elsif nozzle_diameter[0]==0.3}0.08{else}0{endif} ; Filament gcode\n{endif}\n\nM142 S36 ; set heatbreak target temp",
     "compatible_printers": [
       "Prusa XL 0.4 nozzle"
     ]
diff --git a/resources/profiles/Prusa/machine/Prusa XL 0.4 nozzle.json b/resources/profiles/Prusa/machine/Prusa XL 0.4 nozzle.json
index 2c764c39e6..cea314a045 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 0.4 nozzle.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 0.4 nozzle.json	
@@ -103,7 +103,7 @@
   "before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\nG92 E0.0\n;[layer_z]",
   "change_filament_gcode": "M600\nG1 E0.3 F1500 ; prime after color change",
   "layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
-  "printer_notes": "Do not remove the keywords below.\nPRINTER_VENDOR_PRUSA3D\nPRINTER_MODEL_XL\nPG",
+  "printer_notes": "Don't remove the following keywords! These keywords are used in the \"compatible printer\" condition of the print and filament profiles to link the particular print and filament profiles to this printer profile.\nPRINTER_MODEL_XL\nPG",
   "scan_first_layer": "0",
   "machine_load_filament_time": "17",
   "machine_unload_filament_time": "16",