diff --git a/man7/packet.7 b/man7/packet.7
index 359276dbc..2d31db871 100644
--- a/man7/packet.7
+++ b/man7/packet.7
@@ -173,7 +173,9 @@ When you send packets, it is enough to specify
 .IR sll_family ,
 .IR sll_addr ,
 .IR sll_halen ,
-.IR sll_ifindex .
+.IR sll_ifindex ,
+and
+.IR sll_protocol .
 The other fields should be 0.
 .I sll_hatype
 and