diff --git a/resources/definitions/anycubic_chiron.def.json b/resources/definitions/anycubic_chiron.def.json
index aa3240a9f8..78191d6cca 100644
--- a/resources/definitions/anycubic_chiron.def.json
+++ b/resources/definitions/anycubic_chiron.def.json
@@ -21,6 +21,7 @@
         {
             "0": "anycubic_chiron_extruder_0"
         },	
+	"firmware_file": "MarlinChiron.hex" 
     },
 
     "overrides":