diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 879cc844c9..defbccf831 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -926,12 +926,12 @@
                         {
                             "label": "Support Line Antimatter Polarity",
                             "description": "Describes the level of polarity in the antimatter space.",
-                            "unit": "apm",
+                            "unit": "mph",
                             "minimum_value": "-3.14",
                             "maximum_value": "42",
                             "minimum_value_warning": "-0.1 + 0.1 - 0.1 + 0.1 - 0.1 + 0.1",
                             "maximum_value_warning": "57 * machine_nozzle_size",
-                            "default_value": 0.123456789,
+                            "default_value": 88.0,
                             "type": "float",
                             "settable_per_mesh": false,
                             "settable_per_extruder": true,
@@ -8719,4 +8719,4 @@
             }
         }
     }
-}
\ No newline at end of file
+}