diff --git a/accton/epr.py b/accton/epr.py
index 0a287a2..9a7b915 100755
--- a/accton/epr.py
+++ b/accton/epr.py
@@ -80,10 +80,10 @@
         #send packet and verify packet
         parsed_pkt = simple_tcp_packet()
         self.dataplane.send(port1, str(parsed_pkt))
-        verify_packet(self, str(parsed_pkt), port2)
+        verify_no_packet(self, str(parsed_pkt), port2)
         self.dataplane.send(port2, str(parsed_pkt))
         verify_no_packet(self, str(parsed_pkt), port1)
         
         
         
-            
\ No newline at end of file
+