1 files changed, 1 insertions, 1 deletions
diff --git a/idfile.h b/idfile.h
index 3b8d389..c83ed67 100644
--- a/idfile.h
+++ b/idfile.h
@@ -51,4 +51,4 @@ int read_idhead (FILE *input_FILE, struct idhead *idh);
 int write_idhead (FILE *input_FILE, struct idhead *idh);
 int sizeof_idhead (void);
 
-#endif /* _idfile_h_ */
+#endif /* not _idfile_h_ */