diff --git a/resources/machines/fdmprinter.json b/resources/machines/fdmprinter.json
index a84bea04a2..0b7de2fcc7 100644
--- a/resources/machines/fdmprinter.json
+++ b/resources/machines/fdmprinter.json
@@ -38,7 +38,7 @@
             "default": false
         },
         "machine_extruder_count": {
-            "description": "Number of extruder trains.",
+            "description": "Number of extruder trains. An extruder train is the combination of a feeder, bowden tube, and nozzle.",
             "default": 1
         },
         "machine_nozzle_size": {