diff --git a/lib/Slic3r/Config.pm b/lib/Slic3r/Config.pm
index 7c0e9a2fa..c4eb4a328 100644
--- a/lib/Slic3r/Config.pm
+++ b/lib/Slic3r/Config.pm
@@ -9,7 +9,7 @@ use constant PI => 4 * atan2(1, 1);
 our @Ignore = qw(duplicate_x duplicate_y multiply_x multiply_y support_material_tool);
 
 our %Groups = (
-    print       => [qw(layer_height first_layer_height perimeters randomize_start extra_perimeters solid_layers fill_density fill_angle fill_pattern solid_fill_pattern infill_every_layers perimeter_speed small_perimeter_speed infill_speed solid_infill_speed top_solid_infill_speed bridge_speed travel_speed first_layer_speed skirts skirt_distance skirt_height brim_width support_material support_material_threshold support_material_pattern support_material_pattern support_material_spacing support_material_angle notes complete_objects extruder_clearance_radius extruder_clearance_height gcode_comments output_filename_format post_process extrusion_width first_layer_extrusion_width infill_extrusion_width support_material_extrusion_width bridge_flow_ratio duplicate_distance)],
+    print       => [qw(layer_height first_layer_height perimeters randomize_start extra_perimeters solid_layers fill_density fill_angle fill_pattern solid_fill_pattern infill_every_layers perimeter_speed small_perimeter_speed external_perimeter_speed infill_speed solid_infill_speed top_solid_infill_speed bridge_speed travel_speed first_layer_speed skirts skirt_distance skirt_height brim_width support_material support_material_threshold support_material_pattern support_material_pattern support_material_spacing support_material_angle notes complete_objects extruder_clearance_radius extruder_clearance_height gcode_comments output_filename_format post_process extrusion_width first_layer_extrusion_width infill_extrusion_width support_material_extrusion_width bridge_flow_ratio duplicate_distance)],
     filament    => [qw(filament_diameter extrusion_multiplier temperature first_layer_temperature bed_temperature first_layer_bed_temperature cooling min_fan_speed max_fan_speed bridge_fan_speed disable_fan_first_layers fan_always_on fan_below_layer_time slowdown_below_layer_time min_print_speed)],
     printer     => [qw(bed_size print_center z_offset gcode_flavor use_relative_e_distances nozzle_diameter retract_length retract_lift retract_speed retract_restart_extra retract_before_travel start_gcode end_gcode layer_gcode)],
 );
diff --git a/lib/Slic3r/GUI/Tab.pm b/lib/Slic3r/GUI/Tab.pm
index d215b3777..facc4e76b 100644
--- a/lib/Slic3r/GUI/Tab.pm
+++ b/lib/Slic3r/GUI/Tab.pm
@@ -323,7 +323,7 @@ sub build {
     $self->add_options_page('Speed', 'time.png', optgroups => [
         {
             title => 'Speed for print moves',
-            options => [qw(perimeter_speed small_perimeter_speed infill_speed solid_infill_speed top_solid_infill_speed bridge_speed)],
+            options => [qw(perimeter_speed small_perimeter_speed external_perimeter_speed infill_speed solid_infill_speed top_solid_infill_speed bridge_speed)],
         },
         {
             title => 'Speed for non-print moves',