diff --git a/resources/definitions/ultimaker3.def.json b/resources/definitions/ultimaker3.def.json
index 06f0fe3a89..61d185a978 100644
--- a/resources/definitions/ultimaker3.def.json
+++ b/resources/definitions/ultimaker3.def.json
@@ -130,7 +130,7 @@
         "retraction_min_travel": { "value": "5" },
         "retraction_prime_speed": { "value": "15" },
         "skin_overlap": { "value": "10" },
-        "speed_layer_0": { "value": "speed_print * 30 / 70" },
+        "speed_layer_0": { "value": "20" },
         "speed_prime_tower": { "value": "speed_topbottom" },
         "speed_print": { "value": "35" },
         "speed_support": { "value": "speed_wall_0" },