diff --git a/src/slic3r/Utils/CalibUtils.cpp b/src/slic3r/Utils/CalibUtils.cpp
index 6904daa2f1..9c0d8d3800 100644
--- a/src/slic3r/Utils/CalibUtils.cpp
+++ b/src/slic3r/Utils/CalibUtils.cpp
@@ -378,12 +378,13 @@ void CalibUtils::calib_flowrate(int pass, const CalibInfo& calib_info, std::stri
     first_layer_height        = std::max(first_layer_height, layer_height);
 
     float zscale = (first_layer_height + 6 * layer_height) / 1.4;
+    for (auto _obj : model.objects) _obj->scale(1, 1, zscale);
     // only enlarge
-    if (xyScale > 1.2) {
-        for (auto _obj : model.objects) _obj->scale(xyScale, xyScale, zscale);
-    } else {
-        for (auto _obj : model.objects) _obj->scale(1, 1, zscale);
-    }
+    //if (xyScale > 1.2) {
+    //    for (auto _obj : model.objects) _obj->scale(xyScale, xyScale, zscale);
+    //} else {
+    //    for (auto _obj : model.objects) _obj->scale(1, 1, zscale);
+    //}
 
     Flow   infill_flow                   = Flow(nozzle_diameter * 1.2f, layer_height, nozzle_diameter);
     double filament_max_volumetric_speed = filament_config.option<ConfigOptionFloats>("filament_max_volumetric_speed")->get_at(0);