diff --git a/resources/definitions/ultimaker_s3.def.json b/resources/definitions/ultimaker_s3.def.json
index c380fcbc50..0fbf4acd77 100644
--- a/resources/definitions/ultimaker_s3.def.json
+++ b/resources/definitions/ultimaker_s3.def.json
@@ -32,7 +32,7 @@
         "weight": -1,
         "firmware_update_info": {
             "id": 213482,
-            "check_urls": ["https://software.ultimaker.com/releases/firmware/213482/stable/version.txt"],
+            "check_urls": ["https://software.ultimaker.com/releases/firmware/213482/stable/um-update.swu.version"],
             "update_url": "https://ultimaker.com/firmware"
         }
     },