diff --git a/resources/definitions/fdmextruder.def.json b/resources/definitions/fdmextruder.def.json
index 3f84ed69a4..19c9e92d18 100644
--- a/resources/definitions/fdmextruder.def.json
+++ b/resources/definitions/fdmextruder.def.json
@@ -178,7 +178,19 @@
                     "maximum_value": "machine_height",
                     "settable_per_mesh": false,
                     "settable_per_extruder": true
-                }
+                },
+               "machine_extruder_cooling_fan_number":
+                {
+                    "label": "Extruder Print Cooling Fan",
+                    "description": "The number of the print cooling fan associated with this extruder. Only change this from the default value of 0 when you have a different print cooling fan for each extruder.",
+                    "type": "int",
+                    "default_value": 0,
+                    "minimum_value": "0",
+                    "settable_per_mesh": false,
+                    "settable_per_extruder": true,
+                    "settable_per_meshgroup": false,
+                    "setttable_globally": false
+               }
             }
         },
         "platform_adhesion":