diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index b0fb3f0e6..2c0742559 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -1192,9 +1192,9 @@ void Sidebar::update_sliced_info_sizer()
             {
                 double material_cost = cfg->option("bottle_cost")->getFloat() / 
                                        cfg->option("bottle_volume")->getFloat();
-                str_total_cost = wxString::Format("%.2f", material_cost*(ps.objects_used_material + ps.support_used_material) / 1000);                
+                str_total_cost = wxString::Format("%.3f", material_cost*(ps.objects_used_material + ps.support_used_material) / 1000);                
             }
-            p->sliced_info->SetTextAndShow(siCost, str_total_cost);
+            p->sliced_info->SetTextAndShow(siCost, str_total_cost, "Cost");
 
             wxString t_est = std::isnan(ps.estimated_print_time) ? "N/A" : get_time_dhms(float(ps.estimated_print_time));
             p->sliced_info->SetTextAndShow(siEstimatedTime, t_est, _(L("Estimated printing time")) + " :");
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 353e822e3..c518ede80 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -3448,7 +3448,7 @@ void TabSLAMaterial::build()
             new_conf.set_key_value("bottle_weight", new ConfigOptionFloat(new_bottle_weight));
         }
         if (opt_key == "bottle_weight") {
-            double new_bottle_volume =  boost::any_cast<double>(value)/(new_conf.option("material_density")->getFloat() * 1000);
+            double new_bottle_volume =  boost::any_cast<double>(value)/new_conf.option("material_density")->getFloat() * 1000;
             new_conf.set_key_value("bottle_volume", new ConfigOptionFloat(new_bottle_volume));
         }
         if (opt_key == "material_density") {
@@ -3459,12 +3459,10 @@ void TabSLAMaterial::build()
         load_config(new_conf);
 
         update_dirty();
-        on_value_change(opt_key, value);
 
-        if (opt_key == "bottle_volume" || opt_key == "bottle_cost") {
-            wxGetApp().sidebar().update_sliced_info_sizer();
-            wxGetApp().sidebar().Layout();
-        }
+        // Change of any from those options influences for an update of "Sliced Info"
+        wxGetApp().sidebar().update_sliced_info_sizer();
+        wxGetApp().sidebar().Layout();
     };
 
     optgroup = page->new_optgroup(_(L("Layers")));