$OpenBSD$

Index: include/gbfredletterwords.h
--- include/gbfredletterwords.h.orig
+++ include/gbfredletterwords.h
@@ -21,7 +21,7 @@
  */
 
 #ifndef GBFSREDLETTERWORDS_H
-#define GBFREDLETTERWORDS_H
+#define GBFSREDLETTERWORDS_H
 
 #include <swoptfilter.h>