diff --git a/ci-scripts/cls_oaicitest.py b/ci-scripts/cls_oaicitest.py
index 75c5b0a358..b321de40f4 100644
--- a/ci-scripts/cls_oaicitest.py
+++ b/ci-scripts/cls_oaicitest.py
@@ -145,7 +145,7 @@ def Iperf_analyzeV3UDP(filename, iperf_bitrate_threshold, iperf_packetloss_thres
 	with open(filename, 'r') as server_file:
 		for line in server_file.readlines():
 			res_sender = re.search(r'(?P<bitrate>[0-9\.]+)\s+(?P<unit>[KMG]bits\/sec)\s+(?P<jitter>[0-9\.]+\s+ms)\s+(?P<lostPack>\d+)/(?P<sentPack>\d+) \((?P<lost>[0-9\.]+).*?\s+(sender)', line)
-			res_receiver = re.search(r'(?P<bitrate>[0-9\.]+)\s+(?P<unit>[KMG]bits\/sec)\s+(?P<jitter>[0-9\.]+\s+ms)\s+(?P<lostPack>\d+)/(?P<receivedPack>\d+) \((?P<lost>[0-9\.]+).*?\s+(receiver)', line)
+			res_receiver = re.search(r'(?P<bitrate>[0-9\.]+)\s+(?P<unit>[KMG]bits\/sec)\s+(?P<jitter>[0-9\.]+\s+ms)\s+(?P<lostPack>-?\d+)/(?P<receivedPack>\d+)\s+\((?P<lost>[0-9\.]+)%\).*?(receiver)', line)
 			if res_sender is not None:
 				sender_bitrate = res_sender.group('bitrate')
 				sender_unit = res_sender.group('unit')