diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index 673424d07b..9c6da1ad02 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -683,7 +683,9 @@ static std::vector<std::string> s_Preset_print_options {
      "gcode_add_line_number", "enable_arc_fitting", "infill_combination", "adaptive_layer_height",
      "support_bottom_interface_spacing", "enable_overhang_speed", "overhang_1_4_speed", "overhang_2_4_speed", "overhang_3_4_speed", "overhang_4_4_speed",
      "initial_layer_infill_speed", "only_one_wall_top", "only_one_wall_first_layer",
-     "timelapse_type"
+     "timelapse_type",
+     //SoftFever
+     "top_solid_infill_flow_ratio"
 
 };
 
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 351ec130d3..118d2d7a60 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -640,6 +640,16 @@ void PrintConfigDef::init_fff_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(1));
 
+    def = this->add("top_solid_infill_flow_ratio", coFloat);
+    def->label = L("Top surface flow ratio");
+    def->category = L("Advanced");
+    def->tooltip = L("This factor affects the amount of material for top solid infill. "
+                   "You can decrease it slightly to have smooth surface finish.");
+    def->min = 0;
+    def->max = 2;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(1));
+    
     def = this->add("only_one_wall_top", coBool);
     def->label = L("Only one wall on top surfaces");
     def->category = L("Quality");
diff --git a/src/libslic3r/PrintConfig.hpp b/src/libslic3r/PrintConfig.hpp
index 0d626aea12..e556d6511d 100644
--- a/src/libslic3r/PrintConfig.hpp
+++ b/src/libslic3r/PrintConfig.hpp
@@ -654,6 +654,7 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionFloat,                bridge_flow))
     ((ConfigOptionFloat,                bridge_speed))
     ((ConfigOptionEnum<InfillPattern>,  top_surface_pattern))
+    ((ConfigOptionFloat,                top_solid_infill_flow_ratio))
     ((ConfigOptionEnum<InfillPattern>,  bottom_surface_pattern))
     ((ConfigOptionFloat,                outer_wall_line_width))
     ((ConfigOptionFloat,                outer_wall_speed))
diff --git a/src/libslic3r/PrintRegion.cpp b/src/libslic3r/PrintRegion.cpp
index 0f9f92e488..7ed45fb444 100644
--- a/src/libslic3r/PrintRegion.cpp
+++ b/src/libslic3r/PrintRegion.cpp
@@ -22,6 +22,7 @@ Flow PrintRegion::flow(const PrintObject &object, FlowRole role, double layer_he
 {
     const PrintConfig          &print_config = object.print()->config();
     ConfigOptionFloat  config_width;
+    double flow_ratio = 1.0;
     // Get extrusion width from configuration.
     // (might be an absolute value, or a percent value, or zero for auto)
     if (first_layer && print_config.initial_layer_line_width.value > 0) {
@@ -36,6 +37,7 @@ Flow PrintRegion::flow(const PrintObject &object, FlowRole role, double layer_he
         config_width = m_config.internal_solid_infill_line_width;
     } else if (role == frTopSolidInfill) {
         config_width = m_config.top_surface_line_width;
+        flow_ratio = m_config.top_solid_infill_flow_ratio;
     } else {
         throw Slic3r::InvalidArgument("Unknown role");
     }
@@ -46,7 +48,7 @@ Flow PrintRegion::flow(const PrintObject &object, FlowRole role, double layer_he
     // Get the configured nozzle_diameter for the extruder associated to the flow role requested.
     // Here this->extruder(role) - 1 may underflow to MAX_INT, but then the get_at() will follback to zero'th element, so everything is all right.
     auto nozzle_diameter = float(print_config.nozzle_diameter.get_at(this->extruder(role) - 1));
-    return Flow::new_from_config_width(role, config_width, nozzle_diameter, float(layer_height));
+    return Flow::new_from_config_width(role, config_width, nozzle_diameter, float(layer_height)).with_flow_ratio(flow_ratio);
 }
 
 coordf_t PrintRegion::nozzle_dmr_avg(const PrintConfig &print_config) const
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index e09239c29b..4bd10b75da 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -1782,6 +1782,7 @@ void TabPrint::build()
         optgroup = page->new_optgroup(L("Advanced"));
         optgroup->append_single_option_line("wall_infill_order");
         optgroup->append_single_option_line("bridge_flow");
+        optgroup->append_single_option_line("top_solid_infill_flow_ratio");
         optgroup->append_single_option_line("only_one_wall_top");
         optgroup->append_single_option_line("only_one_wall_first_layer");
         optgroup->append_single_option_line("detect_overhang_wall");