diff --git a/ipmiwhitelist.hpp b/ipmiwhitelist.hpp
index 7d096c2..fd45a3d 100644
--- a/ipmiwhitelist.hpp
+++ b/ipmiwhitelist.hpp
@@ -1,5 +1,4 @@
-#ifndef __HOST_IPMID_IPMI_WHITELIST_H__
-#define __HOST_IPMID_IPMI_WHITELIST_H_
+#pragma once
 
 #include <utility>
 #include <vector>
@@ -7,5 +6,3 @@
 using netfncmd_pair = std::pair<unsigned char, unsigned char>;
 
 extern const std::vector<netfncmd_pair> whitelist;
-
-#endif