diff --git a/include/file.h b/include/file.h
index ae592f0a..a26d0519 100644
--- a/include/file.h
+++ b/include/file.h
@@ -153,6 +153,6 @@ extern int ef_flags(int);
 extern int ef_byname(char *);
 extern int ef_byname_from(char *, int *);
 
-extern struct empfile empfile[EF_MAX];
+extern struct empfile empfile[EF_MAX + 1];
 
 #endif /* _FILE_H_ */