diff --git a/lib/Slic3r/GUI/Plater/2D.pm b/lib/Slic3r/GUI/Plater/2D.pm
index a1e077591..7beba9299 100644
--- a/lib/Slic3r/GUI/Plater/2D.pm
+++ b/lib/Slic3r/GUI/Plater/2D.pm
@@ -13,6 +13,8 @@ use Wx qw(wxTheApp :misc :pen :brush :sizer :font :cursor wxTAB_TRAVERSAL);
 use Wx::Event qw(EVT_MOUSE_EVENTS EVT_PAINT EVT_ERASE_BACKGROUND EVT_SIZE);
 use base 'Wx::Panel';
 
+use Wx::Locale gettext => 'L';
+
 sub new {
     my $class = shift;
     my ($parent, $size, $objects, $model, $config) = @_;
@@ -126,8 +128,8 @@ sub repaint {
         $dc->SetFont(Wx::Font->new(14, wxDEFAULT, wxNORMAL, wxNORMAL));
         $dc->DrawLabel(
             join('-', +(localtime)[3,4]) eq '13-8'
-                ? 'What do you want to print today? ™' # Sept. 13, 2006. The first part ever printed by a RepRap to make another RepRap.
-                : 'Drag your objects here',
+                ? L('What do you want to print today? ™') # Sept. 13, 2006. The first part ever printed by a RepRap to make another RepRap.
+                : L('Drag your objects here'),
             Wx::Rect->new(0, 0, $self->GetSize->GetWidth, $self->GetSize->GetHeight), wxALIGN_CENTER_HORIZONTAL | wxALIGN_CENTER_VERTICAL);
     }
     
diff --git a/lib/Slic3r/GUI/Plater/3DPreview.pm b/lib/Slic3r/GUI/Plater/3DPreview.pm
index a8bda3e50..d86615218 100644
--- a/lib/Slic3r/GUI/Plater/3DPreview.pm
+++ b/lib/Slic3r/GUI/Plater/3DPreview.pm
@@ -8,6 +8,8 @@ use Wx qw(:misc :sizer :slider :statictext :keycode wxWHITE wxCB_READONLY);
 use Wx::Event qw(EVT_SLIDER EVT_KEY_DOWN EVT_CHECKBOX EVT_CHOICE EVT_CHECKLISTBOX);
 use base qw(Wx::Panel Class::Accessor);
 
+use Wx::Locale gettext => 'L';
+
 __PACKAGE__->mk_accessors(qw(print gcode_preview_data enabled _loaded canvas slider_low slider_high single_layer auto_zoom));
 
 sub new {
@@ -58,30 +60,42 @@ sub new {
     $z_label_high->SetFont($Slic3r::GUI::small_font);
 
     $self->single_layer(0);
-    my $checkbox_singlelayer = $self->{checkbox_singlelayer} = Wx::CheckBox->new($self, -1, "1 Layer");
+    my $checkbox_singlelayer = $self->{checkbox_singlelayer} = Wx::CheckBox->new($self, -1, L("1 Layer"));
     
-    my $label_view_type = $self->{label_view_type} = Wx::StaticText->new($self, -1, "View");
+    my $label_view_type = $self->{label_view_type} = Wx::StaticText->new($self, -1, L("View"));
     
     my $choice_view_type = $self->{choice_view_type} = Wx::Choice->new($self, -1);
-    $choice_view_type->Append("Feature type");
-    $choice_view_type->Append("Height");
-    $choice_view_type->Append("Width");
-    $choice_view_type->Append("Speed");
-    $choice_view_type->Append("Tool");
+    $choice_view_type->Append(L("Feature type"));
+    $choice_view_type->Append(L("Height"));
+    $choice_view_type->Append(L("Width"));
+    $choice_view_type->Append(L("Speed"));
+    $choice_view_type->Append(L("Tool"));
     $choice_view_type->SetSelection(0);
 
-    my $label_show_features = $self->{label_show_features} = Wx::StaticText->new($self, -1, "Show");
+    my $label_show_features = $self->{label_show_features} = Wx::StaticText->new($self, -1, L("Show"));
     
     my $combochecklist_features = $self->{combochecklist_features} = Wx::ComboCtrl->new();
-    $combochecklist_features->Create($self, -1, "Feature types", wxDefaultPosition, [200, -1], wxCB_READONLY);
-    my $feature_text = "Feature types";
-    my $feature_items = "Perimeter|External perimeter|Overhang perimeter|Internal infill|Solid infill|Top solid infill|Bridge infill|Gap fill|Skirt|Support material|Support material interface|Wipe tower|Custom";
+    $combochecklist_features->Create($self, -1, L("Feature types"), wxDefaultPosition, [200, -1], wxCB_READONLY);
+    my $feature_text = L("Feature types");
+    my $feature_items = L("Perimeter")."|"
+                        .L("External perimeter")."|"
+                        .L("Overhang perimeter")."|"
+                        .L("Internal infill")."|"
+                        .L("Solid infill")."|"
+                        .L("Top solid infill")."|"
+                        .L("Bridge infill")."|"
+                        .L("Gap fill")."|"
+                        .L("Skirt")."|"
+                        .L("Support material")."|"
+                        .L("Support material interface")."|"
+                        .L("Wipe tower")."|"
+                        .L("Custom");
     Slic3r::GUI::create_combochecklist($combochecklist_features, $feature_text, $feature_items, 1);
     
-    my $checkbox_travel         = $self->{checkbox_travel}          = Wx::CheckBox->new($self, -1, "Travel");
-    my $checkbox_retractions    = $self->{checkbox_retractions}     = Wx::CheckBox->new($self, -1, "Retractions");    
-    my $checkbox_unretractions  = $self->{checkbox_unretractions}   = Wx::CheckBox->new($self, -1, "Unretractions");
-    my $checkbox_shells         = $self->{checkbox_shells}          = Wx::CheckBox->new($self, -1, "Shells");
+    my $checkbox_travel         = $self->{checkbox_travel}          = Wx::CheckBox->new($self, -1, L("Travel"));
+    my $checkbox_retractions    = $self->{checkbox_retractions}     = Wx::CheckBox->new($self, -1, L("Retractions"));    
+    my $checkbox_unretractions  = $self->{checkbox_unretractions}   = Wx::CheckBox->new($self, -1, L("Unretractions"));
+    my $checkbox_shells         = $self->{checkbox_shells}          = Wx::CheckBox->new($self, -1, L("Shells"));
 
     my $hsizer = Wx::BoxSizer->new(wxHORIZONTAL);
     my $vsizer = Wx::BoxSizer->new(wxVERTICAL);
diff --git a/xs/src/libslic3r/GCode/PreviewData.cpp b/xs/src/libslic3r/GCode/PreviewData.cpp
index 183e10b2a..fef10468c 100644
--- a/xs/src/libslic3r/GCode/PreviewData.cpp
+++ b/xs/src/libslic3r/GCode/PreviewData.cpp
@@ -1,6 +1,7 @@
 #include "Analyzer.hpp"
 #include "PreviewData.hpp"
 #include <float.h>
+#include "slic3r/GUI/GUI.hpp"
 
 namespace Slic3r {
 
@@ -132,21 +133,21 @@ const GCodePreviewData::Color GCodePreviewData::Extrusion::Default_Extrusion_Rol
 // todo: merge with Slic3r::ExtrusionRole2String() from GCode.cpp
 const std::string GCodePreviewData::Extrusion::Default_Extrusion_Role_Names[Num_Extrusion_Roles]
 {
-    "None",
-    "Perimeter",
-    "External perimeter",
-    "Overhang perimeter",
-    "Internal infill",
-    "Solid infill",
-    "Top solid infill",
-    "Bridge infill",
-    "Gap fill",
-    "Skirt",
-    "Support material",
-    "Support material interface",
-    "Wipe tower",
-    "Custom",
-    "Mixed"
+    L("None"),
+    L("Perimeter"),
+    L("External perimeter"),
+    L("Overhang perimeter"),
+    L("Internal infill"),
+    L("Solid infill"),
+    L("Top solid infill"),
+    L("Bridge infill"),
+    L("Gap fill"),
+    L("Skirt"),
+    L("Support material"),
+    L("Support material interface"),
+    L("Wipe tower"),
+    L("Custom"),
+    L("Mixed")
 };
 
 const GCodePreviewData::Extrusion::EViewType GCodePreviewData::Extrusion::Default_View_Type = GCodePreviewData::Extrusion::FeatureType;
@@ -325,15 +326,15 @@ std::string GCodePreviewData::get_legend_title() const
     switch (extrusion.view_type)
     {
     case Extrusion::FeatureType:
-        return "Feature type";
+        return L("Feature type");
     case Extrusion::Height:
-        return "Height (mm)";
+        return L("Height (mm)");
     case Extrusion::Width:
-        return "Width (mm)";
+        return L("Width (mm)");
     case Extrusion::Feedrate:
-        return "Speed (mm/s)";
+        return L("Speed (mm/s)");
     case Extrusion::Tool:
-        return "Tool";
+        return L("Tool");
     }
 
     return "";
diff --git a/xs/src/slic3r/GUI/3DScene.cpp b/xs/src/slic3r/GUI/3DScene.cpp
index f492ed342..46d955cf4 100644
--- a/xs/src/slic3r/GUI/3DScene.cpp
+++ b/xs/src/slic3r/GUI/3DScene.cpp
@@ -27,6 +27,8 @@
 #include <wx/image.h>
 #include <wx/settings.h>
 
+#include "GUI.hpp"
+
 namespace Slic3r {
 
 void GLIndexedVertexArray::load_mesh_flat_shading(const TriangleMesh &mesh)
@@ -1144,7 +1146,7 @@ bool _3DScene::LegendTexture::generate(const GCodePreviewData& preview_data, con
     m_data.clear();
 
     // collects items to render
-    const std::string& title = preview_data.get_legend_title();
+    auto title = GUI::L_str(preview_data.get_legend_title());
     const GCodePreviewData::LegendItemsList& items = preview_data.get_legend_items(tool_colors);
 
     unsigned int items_count = (unsigned int)items.size();
@@ -1166,7 +1168,7 @@ bool _3DScene::LegendTexture::generate(const GCodePreviewData& preview_data, con
     unsigned int max_text_height = 0;
     for (const GCodePreviewData::LegendItem& item : items)
     {
-        memDC.GetTextExtent(item.text, &w, &h);
+        memDC.GetTextExtent(GUI::L_str(item.text), &w, &h);
         max_text_width = std::max(max_text_width, (unsigned int)w);
         max_text_height = std::max(max_text_height, (unsigned int)h);
     }
@@ -1243,7 +1245,7 @@ bool _3DScene::LegendTexture::generate(const GCodePreviewData& preview_data, con
         memDC.DrawRectangle(wxRect(icon_x_inner, icon_y + 1, px_inner_square, px_inner_square));
 
         // draw text
-        memDC.DrawText(item.text, text_x, icon_y + text_y_offset);
+		memDC.DrawText(GUI::L_str(item.text), text_x, icon_y + text_y_offset);
 
         // update y
         icon_y += icon_y_step;
diff --git a/xs/src/slic3r/GUI/GUI.cpp b/xs/src/slic3r/GUI/GUI.cpp
index da1ec4626..13d3db908 100644
--- a/xs/src/slic3r/GUI/GUI.cpp
+++ b/xs/src/slic3r/GUI/GUI.cpp
@@ -531,7 +531,7 @@ void create_combochecklist(wxComboCtrl* comboCtrl, std::string text, std::string
 
         for (const std::string& item : items_str)
         {
-            popup->Append(item);
+            popup->Append(from_u8(item));
         }
 
         for (unsigned int i = 0; i < popup->GetCount(); ++i)