diff --git a/include/common/namespace.h b/include/common/namespace.h
index e67742b..fa4185d 100644
--- a/include/common/namespace.h
+++ b/include/common/namespace.h
@@ -1,4 +1,5 @@
-#ifndef NAMESPACE_H
+#ifndef _NAMESPACE_H
+#define _NAMESPACE_H
 
 #include <stdlib.h>
 #include <ebistree.h>
@@ -21,4 +22,4 @@
 int netns_init(void);
 #endif /* CONFIG_HAP_NS */
 
-#endif /* NAMESPACE_H */
+#endif /* _NAMESPACE_H */