diff --git a/Documentation/networking/ifenslave.c b/Documentation/networking/ifenslave.c
index a12059886755..1b96ccda3836 100644
--- a/Documentation/networking/ifenslave.c
+++ b/Documentation/networking/ifenslave.c
@@ -1081,7 +1081,7 @@ static int set_if_addr(char *master_ifname, char *slave_ifname)
 
 		}
 
-		ipaddr = ifr.ifr_addr.sa_data;
+		ipaddr = (unsigned char *)ifr.ifr_addr.sa_data;
 		v_print("Interface '%s': set IP %s to %d.%d.%d.%d\n",
 			slave_ifname, ifra[i].desc,
 			ipaddr[0], ipaddr[1], ipaddr[2], ipaddr[3]);