diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index a8ddb95e7f0617838be13e8ed1d5c45a615e253f..df68963dc90ada0ec19f8997d920f6faf3186e05 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -258,7 +258,7 @@ int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
 		esp_output_udp_encap(x, skb, esp);
 
 	if (!skb_cloned(skb)) {
-		if (tailen <= skb_availroom(skb)) {
+		if (tailen <= skb_tailroom(skb)) {
 			nfrags = 1;
 			trailer = skb;
 			tail = skb_tail_pointer(trailer);
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 4e3fdc8889430ccab861f3eb5e027f297ec1c5ef..ab64f367d11cc256ddc56527d979a06e32170745 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -226,7 +226,7 @@ int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info
 	int tailen = esp->tailen;
 
 	if (!skb_cloned(skb)) {
-		if (tailen <= skb_availroom(skb)) {
+		if (tailen <= skb_tailroom(skb)) {
 			nfrags = 1;
 			trailer = skb;
 			tail = skb_tail_pointer(trailer);