diff --git a/gui/resources.hpp b/gui/resources.hpp
index 874836e..3cb5281 100644
--- a/gui/resources.hpp
+++ b/gui/resources.hpp
@@ -38,6 +38,14 @@
 class FontResource : public Resource
 {
 public:
+	enum Type
+	{
+		TYPE_TWRP,
+#ifndef TW_DISABLE_TTF
+		TYPE_TTF,
+#endif
+	};
+
 	FontResource(xml_node<>* node, ZipArchive* pZip);
 	virtual ~FontResource();
 
@@ -46,6 +54,7 @@
 
 protected:
 	void* mFont;
+	Type m_type;
 };
 
 class ImageResource : public Resource