diff --git a/include/net/sock.h b/include/net/sock.h
index 75b0e97..96565ff 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -873,10 +873,7 @@
 		if (filter) {
 			unsigned int pkt_len = sk_run_filter(skb, filter->insns,
 							     filter->len);
-			if (!pkt_len)
-				err = -EPERM;
-			else
-				skb_trim(skb, pkt_len);
+			err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
 		}
 
 		if (needlock)