diff --git a/usr/include/net/if.h b/usr/include/net/if.h
index f6aa0c0..116a176 100644
--- a/usr/include/net/if.h
+++ b/usr/include/net/if.h
@@ -1,6 +1,7 @@
 #ifndef _NET_IF_H
 #define _NET_IF_H
 
+#include <sys/socket.h>
 #include <sys/types.h>
 #include <linux/if.h>
 
diff --git a/usr/include/sys/un.h b/usr/include/sys/un.h
index 252d87b..e599f67 100644
--- a/usr/include/sys/un.h
+++ b/usr/include/sys/un.h
@@ -5,6 +5,7 @@
 #ifndef _SYS_UN_H
 #define _SYS_UN_H
 
+#include <sys/socket.h>
 #include <linux/un.h>
 
 #endif				/* _SYS_UN_H */