diff --git a/net/rxrpc/ar-ack.c b/net/rxrpc/ar-ack.c
index b6ffe4e1b84a..f99cfce7ca97 100644
--- a/net/rxrpc/ar-ack.c
+++ b/net/rxrpc/ar-ack.c
@@ -375,7 +375,6 @@ protocol_error:
  */
 static void rxrpc_rotate_tx_window(struct rxrpc_call *call, u32 hard)
 {
-	struct rxrpc_skb_priv *sp;
 	unsigned long _skb;
 	int tail = call->acks_tail, old_tail;
 	int win = CIRC_CNT(call->acks_head, tail, call->acks_winsz);
@@ -387,7 +386,6 @@ static void rxrpc_rotate_tx_window(struct rxrpc_call *call, u32 hard)
 	while (call->acks_hard < hard) {
 		smp_read_barrier_depends();
 		_skb = call->acks_window[tail] & ~1;
-		sp = rxrpc_skb((struct sk_buff *) _skb);
 		rxrpc_free_skb((struct sk_buff *) _skb);
 		old_tail = tail;
 		tail = (tail + 1) & (call->acks_winsz - 1);