diff --git a/resources/machines/fdmprinter.json b/resources/machines/fdmprinter.json
index b413492a44..f84a899d37 100644
--- a/resources/machines/fdmprinter.json
+++ b/resources/machines/fdmprinter.json
@@ -836,6 +836,7 @@
                     "type": "float",
                     "min_value": "0.1",
                     "max_value_warning": "150",
+                    "max_value": "299792458000",
                     "default": 60,
                     "children": {
                         "speed_infill": {