diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index ef069ab337..a69b07e47a 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -9896,7 +9896,7 @@ void adjust_settings_for_flowrate_calib(ModelObjectPtrs& objects, bool linear, i
         _obj->config.set_key_value("detect_thin_wall", new ConfigOptionBool(true));
         _obj->config.set_key_value("filter_out_gap_fill", new ConfigOptionFloat(0));
         _obj->config.set_key_value("sparse_infill_pattern", new ConfigOptionEnum<InfillPattern>(ipRectilinear));
-        _obj->config.set_key_value("top_surface_line_width", new ConfigOptionFloatOrPercent(nozzle_diameter * 1.2f, false));
+        _obj->config.set_key_value("top_surface_line_width", new ConfigOptionFloatOrPercent(nozzle_diameter * 1.05f, false));
         _obj->config.set_key_value("internal_solid_infill_line_width", new ConfigOptionFloatOrPercent(nozzle_diameter * 1.2f, false));
         _obj->config.set_key_value("top_surface_pattern", new ConfigOptionEnum<InfillPattern>(ipArchimedeanChords));
         _obj->config.set_key_value("top_solid_infill_flow_ratio", new ConfigOptionFloat(1.0f));