diff --git a/resources/machines/fdmprinter.json b/resources/machines/fdmprinter.json
index c216192df5..e517161c03 100644
--- a/resources/machines/fdmprinter.json
+++ b/resources/machines/fdmprinter.json
@@ -1433,7 +1433,7 @@
                     "description": "The diameter of a special tower.",
                     "unit": "mm",
                     "type": "float",
-                    "default": 1,
+                    "default": 3.0,
                     "min_value": "0",
                     "max_value_warning": "10",
                     "visible": false,
@@ -1444,7 +1444,7 @@
                             "description": "Minimum diameter in the X/Y directions of a small area which is to be supported by a specialized support tower.",
                             "unit": "mm",
                             "type": "float",
-                            "default": 1,
+                            "default": 3.0,
                             "min_value": "0",
                             "max_value_warning": "10",
                             "max_value": "support_tower_diameter",