diff --git a/src/slic3r/GUI/wxExtensions.cpp b/src/slic3r/GUI/wxExtensions.cpp
index 7e8a2d92df..6300ada318 100644
--- a/src/slic3r/GUI/wxExtensions.cpp
+++ b/src/slic3r/GUI/wxExtensions.cpp
@@ -552,6 +552,29 @@ void ObjectDataViewModelNode::msw_rescale()
         update_settings_digest_bitmaps();
 }
 
+bool ObjectDataViewModelNode::SetValue(const wxVariant& variant, unsigned col)
+{
+    switch (col)
+    {
+    case 0: {
+        DataViewBitmapText data;
+        data << variant;
+        m_bmp = data.GetBitmap();
+        m_name = data.GetText();
+        return true; }
+    case 1: {
+        const wxString & val = variant.GetString();
+        m_extruder = val == "0" ? _(L("default")) : val;
+        return true; }
+    case 2:
+        m_action_icon << variant;
+        return true;
+    default:
+        printf("MyObjectTreeModel::SetValue: wrong column");
+    }
+    return false;
+}
+
 void ObjectDataViewModelNode::SetIdx(const int& idx)
 {
     m_idx = idx;
diff --git a/src/slic3r/GUI/wxExtensions.hpp b/src/slic3r/GUI/wxExtensions.hpp
index d0edf9760b..9a6460dcb1 100644
--- a/src/slic3r/GUI/wxExtensions.hpp
+++ b/src/slic3r/GUI/wxExtensions.hpp
@@ -301,27 +301,7 @@ public:
 		return m_children.GetCount();
 	}
 
-	bool SetValue(const wxVariant &variant, unsigned int col)
-	{
-		switch (col)
-		{
-		case 0:{
-            DataViewBitmapText data;
-			data << variant;
-            m_bmp = data.GetBitmap();
-			m_name = data.GetText();
-			return true;}
-		case 1:
-			m_extruder = variant.GetString();
-			return true;
-		case 2:
-			m_action_icon << variant;
-			return true;
-		default:
-			printf("MyObjectTreeModel::SetValue: wrong column");
-		}
-		return false;
-	}
+	bool            SetValue(const wxVariant &variant, unsigned int col);
 
 	void            SetBitmap(const wxBitmap &icon) { m_bmp = icon; }
     const wxBitmap& GetBitmap() const               { return m_bmp; }