diff --git a/src/os/windows/font_win32.h b/src/os/windows/font_win32.h
--- a/src/os/windows/font_win32.h
+++ b/src/os/windows/font_win32.h
@@ -41,5 +41,6 @@ public:
 };
 
 void LoadWin32Font(FontSize fs);
+void LoadWin32Font(FontSize fs, const std::string &file_name, uint size);
 
 #endif /* FONT_WIN32_H */