diff --git a/src/slic3r/GUI/GUI_ObjectManipulation.hpp b/src/slic3r/GUI/GUI_ObjectManipulation.hpp
index cbdc1f998..64a59ac9b 100644
--- a/src/slic3r/GUI/GUI_ObjectManipulation.hpp
+++ b/src/slic3r/GUI/GUI_ObjectManipulation.hpp
@@ -10,6 +10,7 @@ class wxBitmapComboBox;
 class wxStaticText;
 class LockButton;
 class wxStaticBitmap;
+class wxCheckBox;
 
 namespace Slic3r {
 namespace GUI {