diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index a862a8fe3b..f8f17d1c3a 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -2409,7 +2409,7 @@ void PrintConfigDef::init_sla_params()
     def->tooltip = L("Bottle volume");
     def->sidetext = L("ml");
     def->min = 50;
-    def->set_default_value(new ConfigOptionFloat(960.0));
+    def->set_default_value(new ConfigOptionFloat(1000.0));
 
     def = this->add("bottle_weight", coFloat);
     def->label = L("Bottle weight");
@@ -2423,7 +2423,7 @@ void PrintConfigDef::init_sla_params()
     def->tooltip = L("Density");
     def->sidetext = L("g/ml");
     def->min = 0;
-    def->set_default_value(new ConfigOptionFloat(0.960));
+    def->set_default_value(new ConfigOptionFloat(1.0));
 
     def = this->add("bottle_cost", coFloat);
     def->label = L("Cost");
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index cc0800bacd..25604080e8 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -3417,8 +3417,8 @@ void TabSLAMaterial::build()
             new_conf.set_key_value("bottle_volume", new ConfigOptionFloat(new_bottle_volume));
         }
         if (opt_key == "material_density") {
-            double new_bottle_weight = new_conf.option("bottle_volume")->getFloat() * boost::any_cast<double>(value) / 1000;
-            new_conf.set_key_value("bottle_weight", new ConfigOptionFloat(new_bottle_weight));
+            double new_bottle_volume = new_conf.option("bottle_weight")->getFloat() * boost::any_cast<double>(value) * 1000;
+            new_conf.set_key_value("bottle_volume", new ConfigOptionFloat(new_bottle_volume));
         }
 
         load_config(new_conf);