diff --git a/tools/testing/selftests/net/lib/gro.c b/tools/testing/selftests/net/lib/gro.c
index 70b0deb3c11f..fb6a72275636 100644
--- a/tools/testing/selftests/net/lib/gro.c
+++ b/tools/testing/selftests/net/lib/gro.c
@@ -1303,7 +1303,8 @@ static void check_recv_pkts(int fd, int *correct_payload,
 				- sizeof(struct tcphdr) - sizeof(struct iphdr);
 		}
 		vlog("%d ", data_len);
-		if (data_len != correct_payload[num_pkt]) {
+		if (num_pkt < correct_num_pkts &&
+		    data_len != correct_payload[num_pkt]) {
 			vlog("[!=%d]", correct_payload[num_pkt]);
 			bad_packet = true;
 		}