diff --git a/flash.hpp b/flash.hpp
index 9cfd8e1..9721229 100644
--- a/flash.hpp
+++ b/flash.hpp
@@ -3,6 +3,9 @@
 #include <avr/pgmspace.h>
 
 #define F(str) (reinterpret_cast<const ::detail::FlashString *>(PSTR(str)))
+#define GF(name, str) \
+	const char __##name[] PROGMEM = str; \
+	const auto *name = reinterpret_cast<const ::detail::FlashString *>(__##name)
 
 namespace detail {