diff --git a/resources/extruders/ultimaker_methodx_extruder_left.def.json b/resources/extruders/ultimaker_methodx_extruder_left.def.json
index 648a1d6a5c..9ee09b9fae 100644
--- a/resources/extruders/ultimaker_methodx_extruder_left.def.json
+++ b/resources/extruders/ultimaker_methodx_extruder_left.def.json
@@ -14,6 +14,7 @@
             "default_value": 0,
             "maximum_value": "1"
         },
+        "machine_extruder_cooling_fan_number": { "default_value": 0 },
         "machine_extruder_end_code": { "default_value": "M106 P{extruder_nr} S1.0\nG91\nG0 Z0.4 F600\nG90\nG0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000" },
         "machine_extruder_start_code": { "default_value": "G0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000\nM104 S{material_print_temperature}\nG4 S5\nG91\nG0 Z-0.4 F600\nG90\nM107 P{(extruder_nr+1)%2}\nM106 P{extruder_nr} S{cool_fan_speed/100}" },
         "machine_extruder_start_code_duration": { "default_value": 8 },
diff --git a/resources/extruders/ultimaker_methodx_extruder_right.def.json b/resources/extruders/ultimaker_methodx_extruder_right.def.json
index ea52c5dbd2..ff014e0f74 100644
--- a/resources/extruders/ultimaker_methodx_extruder_right.def.json
+++ b/resources/extruders/ultimaker_methodx_extruder_right.def.json
@@ -14,6 +14,7 @@
             "default_value": 1,
             "maximum_value": "1"
         },
+        "machine_extruder_cooling_fan_number": { "default_value": 1 },
         "machine_extruder_end_code": { "default_value": "M106 P{extruder_nr} S1.0\nG91\nG0 Z0.4 F600\nG90\nG0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000" },
         "machine_extruder_start_code": { "default_value": "G0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000\nM104 S{material_print_temperature}\nG4 S5\nG91\nG0 Z-0.4 F600\nG90\nM107 P{(extruder_nr+1)%2}\nM106 P{extruder_nr} S{cool_fan_speed/100}" },
         "machine_extruder_start_code_duration": { "default_value": 8 },
diff --git a/resources/extruders/ultimaker_methodxl_extruder_left.def.json b/resources/extruders/ultimaker_methodxl_extruder_left.def.json
index 43de74b497..68d6fe416b 100644
--- a/resources/extruders/ultimaker_methodxl_extruder_left.def.json
+++ b/resources/extruders/ultimaker_methodxl_extruder_left.def.json
@@ -14,6 +14,7 @@
             "default_value": 0,
             "maximum_value": "1"
         },
+        "machine_extruder_cooling_fan_number": { "default_value": 0 },
         "machine_extruder_end_code": { "default_value": "M106 P{extruder_nr} S1.0\nG91\nG0 Z0.4 F600\nG90\nG0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000" },
         "machine_extruder_start_code": { "default_value": "G0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000\nM104 S{material_print_temperature}\nG4 S5\nG91\nG0 Z-0.4 F600\nG90\nM107 P{(extruder_nr+1)%2}\nM106 P{extruder_nr} S{cool_fan_speed/100}" },
         "machine_extruder_start_code_duration": { "default_value": 10 },
diff --git a/resources/extruders/ultimaker_methodxl_extruder_right.def.json b/resources/extruders/ultimaker_methodxl_extruder_right.def.json
index 581811646f..4e43bdbfc6 100644
--- a/resources/extruders/ultimaker_methodxl_extruder_right.def.json
+++ b/resources/extruders/ultimaker_methodxl_extruder_right.def.json
@@ -14,6 +14,7 @@
             "default_value": 1,
             "maximum_value": "1"
         },
+        "machine_extruder_cooling_fan_number": { "default_value": 1 },
         "machine_extruder_end_code": { "default_value": "M106 P{extruder_nr} S1.0\nG91\nG0 Z0.4 F600\nG90\nG0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000" },
         "machine_extruder_start_code": { "default_value": "G0 X{prime_tower_position_x - prime_tower_size/2} Y{prime_tower_position_y + prime_tower_size/2} F6000\nM104 S{material_print_temperature}\nG4 S5\nG91\nG0 Z-0.4 F600\nG90\nM107 P{(extruder_nr+1)%2}\nM106 P{extruder_nr} S{cool_fan_speed/100}" },
         "machine_extruder_start_code_duration": { "default_value": 10 },