diff --git a/src/slic3r/GUI/Preferences.hpp b/src/slic3r/GUI/Preferences.hpp index ec35bc2a4..738e805b2 100644 --- a/src/slic3r/GUI/Preferences.hpp +++ b/src/slic3r/GUI/Preferences.hpp @@ -7,6 +7,8 @@ #include #include +class wxRadioBox; + namespace Slic3r { namespace GUI {