diff --git a/resources/definitions/creality_ender3s1plus.def.json b/resources/definitions/creality_ender3s1plus.def.json
index 38784fabe0..33692ad569 100644
--- a/resources/definitions/creality_ender3s1plus.def.json
+++ b/resources/definitions/creality_ender3s1plus.def.json
@@ -26,7 +26,7 @@
         
         "speed_print": { "value": 50 },
         "speed_layer_0": { "value": 25 },
-        "speed_travel": { "default_value": 120 },
+        "speed_travel": { "value": "120.0 if speed_print < 60 else 250.0 if speed_print > 100 else speed_print * 2.5" },
         
         "retraction_amount": { "value":  0.8 },
         "retraction_speed": { "default_value": 40 }
diff --git a/resources/definitions/creality_ender3s1pro.def.json b/resources/definitions/creality_ender3s1pro.def.json
index 6e028fb32d..2aa8be58b2 100644
--- a/resources/definitions/creality_ender3s1pro.def.json
+++ b/resources/definitions/creality_ender3s1pro.def.json
@@ -26,7 +26,7 @@
         
         "speed_print": { "value": 50 },
         "speed_layer_0": { "value": 20 },
-        "speed_travel": { "default_value": 120 },
+        "speed_travel": { "value": "120.0 if speed_print < 60 else 250.0 if speed_print > 100 else speed_print * 2.5" },
         
         "retraction_amount": { "value":  0.8 },
         "retraction_speed": { "default_value": 40 }