diff --git a/resources/variants/cartesio_0.25.inst.cfg b/resources/variants/cartesio_0.25.inst.cfg
index 25674d94ae..8053cc8112 100644
--- a/resources/variants/cartesio_0.25.inst.cfg
+++ b/resources/variants/cartesio_0.25.inst.cfg
@@ -46,6 +46,7 @@ retraction_combing = off
 retraction_hop_enabled = true
 retraction_hop = 1
 
+cool_min_layer_time_fan_speed_max = =round(cool_min_layer_time)
 cool_min_layer_time = 20
 
 support_z_distance = 0