diff --git a/dp/wifi3.0/dp_rx_defrag.c b/dp/wifi3.0/dp_rx_defrag.c
index b93bcec9b1d8..8bcd0b8d8a8a 100644
--- a/dp/wifi3.0/dp_rx_defrag.c
+++ b/dp/wifi3.0/dp_rx_defrag.c
@@ -879,9 +879,9 @@ static int dp_rx_defrag_pn_check(qdf_nbuf_t msdu,
 		((uint64_t)rx_mpdu_info_details->pn_127_96 << 32);
 
 	if (cur_pn128[1] == prev_pn128[1])
-		out_of_order = (cur_pn128[0] <= prev_pn128[0]);
+		out_of_order = (cur_pn128[0] - prev_pn128[0] != 1);
 	else
-		out_of_order = (cur_pn128[1] < prev_pn128[1]);
+		out_of_order = (cur_pn128[1] - prev_pn128[1] != 1);
 
 	return out_of_order;
 }