diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index d19557c..a7e9899 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -694,6 +694,8 @@ EXPORT_SYMBOL_GPL(dccp_v4_do_rcv);
 
 /**
  *	dccp_invalid_packet  -  check for malformed packets
+ *	@skb: Packet to validate
+ *
  *	Implements RFC 4340, 8.5:  Step 1: Check header basics
  *	Packets that fail these checks are ignored and do not receive Resets.
  */