diff --git a/src/slic3r/GUI/BitmapComboBox.hpp b/src/slic3r/GUI/BitmapComboBox.hpp
index 6ac064a81a..370432740b 100644
--- a/src/slic3r/GUI/BitmapComboBox.hpp
+++ b/src/slic3r/GUI/BitmapComboBox.hpp
@@ -47,7 +47,7 @@ protected:
  * For this purpose control drawing methods and
  * control size calculation methods (virtual) are overridden.
  **/
-bool OnAddBitmap(const wxBitmap& bitmap) override;
+bool OnAddBitmap(const wxBitmapBundle& bitmap) override;
 void OnDrawItem(wxDC& dc, const wxRect& rect, int item, int flags) const override;
 #endif