diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 8cbdc0a2de46..fa5b8f202d5b 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -228,7 +228,7 @@ int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot)
 		__FUNCTION__, NIPQUAD(sin->sin_addr.s_addr), prog, vers, prot);
 
 	rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin,
-				sizeof(sin), prot, 2, 0);
+				sizeof(*sin), prot, 2, 0);
 	if (IS_ERR(rpcb_clnt))
 		return PTR_ERR(rpcb_clnt);