diff --git a/xs/src/slic3r/GUI/BitmapCache.cpp b/xs/src/slic3r/GUI/BitmapCache.cpp
index e29687ce5..acbcb5c73 100644
--- a/xs/src/slic3r/GUI/BitmapCache.cpp
+++ b/xs/src/slic3r/GUI/BitmapCache.cpp
@@ -88,10 +88,7 @@ wxBitmap* BitmapCache::insert(const std::string &bitmap_key, std::vector<wxBitma
 
     wxMemoryDC memDC;
     memDC.SelectObject(*bitmap);
-#ifdef __WXGTK__
-#else
 	memDC.SetBackground(*wxTRANSPARENT_BRUSH);
-#endif
     memDC.Clear();
     size_t x = 0;
 	for (wxBitmap &bmp : bmps) {
diff --git a/xs/src/slic3r/GUI/BitmapCache.hpp b/xs/src/slic3r/GUI/BitmapCache.hpp
index 46c7db3a1..0cf9d8acf 100644
--- a/xs/src/slic3r/GUI/BitmapCache.hpp
+++ b/xs/src/slic3r/GUI/BitmapCache.hpp
@@ -31,10 +31,7 @@ public:
 
 	static wxBitmap mksolid(size_t width, size_t height, unsigned char r, unsigned char g, unsigned char b, unsigned char transparency);
 	static wxBitmap mksolid(size_t width, size_t height, const unsigned char rgb[3]) { return mksolid(width, height, rgb[0], rgb[1], rgb[2], wxALPHA_OPAQUE); }
-	static wxBitmap mkclear(size_t width, size_t height) {
-		wxColour bg_clr = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
-		return mksolid(width, height, bg_clr.Red(), bg_clr.Green(), bg_clr.Blue()/*, 0, 0, 0*/,  wxALPHA_TRANSPARENT);
-	}
+	static wxBitmap mkclear(size_t width, size_t height) { return mksolid(width, height, 0, 0, 0, wxALPHA_TRANSPARENT); }
 
 private:
     std::map<std::string, wxBitmap*>	m_map;