diff --git a/util/nvramtool/ip_checksum.h b/util/nvramtool/ip_checksum.h
index 365bbd1..ebd52ce 100644
--- a/util/nvramtool/ip_checksum.h
+++ b/util/nvramtool/ip_checksum.h
@@ -13,4 +13,4 @@
 
 unsigned long compute_ip_checksum(void *addr, unsigned long length);
 
-#endif /* IP_CHECKSUM_H */
+#endif				/* IP_CHECKSUM_H */