diff --git a/src/core/name_alias.h b/src/core/name_alias.h
index ed75330f801..7efb571bdd1 100644
--- a/src/core/name_alias.h
+++ b/src/core/name_alias.h
@@ -27,6 +27,8 @@
 */
 
 
+#ifndef name_alias_h
+#define name_alias_h
 
 #include "str.h"
 #include "dprint.h"
@@ -108,3 +110,4 @@ static inline int add_alias(char* name, int len, unsigned short port,
 
 
 
+#endif
\ No newline at end of file