diff --git a/include/net/icmp.h b/include/net/icmp.h
index 75d6156..ce70a58 100644
--- a/include/net/icmp.h
+++ b/include/net/icmp.h
@@ -41,7 +41,6 @@ struct net;
 
 extern void	icmp_send(struct sk_buff *skb_in,  int type, int code, __be32 info);
 extern int	icmp_rcv(struct sk_buff *skb);
-extern int	icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
 extern int	icmp_init(void);
 extern void	icmp_out_count(struct net *net, unsigned char type);