diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index c5aad48a9..e548ed3ba 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -522,7 +522,11 @@ FreqChangedParams::FreqChangedParams(wxWindow* parent) :
             const std::vector<double> &init_extruders = (project_config.option<ConfigOptionFloats>("wiping_volumes_extruders"))->values;
 
             const DynamicPrintConfig* config = &wxGetApp().preset_bundle->printers.get_edited_preset().config;
-            const std::vector<std::string> &extruder_colours = (config->option<ConfigOptionStrings>("extruder_colour"))->values;
+            std::vector<std::string> extruder_colours = (config->option<ConfigOptionStrings>("extruder_colour"))->values;
+            const std::vector<std::string>& filament_colours = (wxGetApp().plater()->get_plater_config()->option<ConfigOptionStrings>("filament_colour"))->values;
+            for (size_t i=0; i<extruder_colours.size(); ++i)
+                if (extruder_colours[i] == "")
+                    extruder_colours[i] = filament_colours[i];
 
             WipingDialog dlg(parent, cast<float>(init_matrix), cast<float>(init_extruders), extruder_colours);
 
@@ -4838,6 +4842,11 @@ void Plater::on_activate()
 	this->p->show_delayed_error_message();
 }
 
+const DynamicPrintConfig* Plater::get_plater_config() const
+{
+    return p->config;
+}
+
 wxString Plater::get_project_filename(const wxString& extension) const
 {
     return p->get_project_filename(extension);
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index 6b488fef1..0dc298566 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -213,6 +213,7 @@ public:
     void on_config_change(const DynamicPrintConfig &config);
     // On activating the parent window.
     void on_activate();
+    const DynamicPrintConfig* get_plater_config() const;
 
     void update_object_menu();