diff --git a/tests/pfcwd/files/pfcwd_helper.py b/tests/pfcwd/files/pfcwd_helper.py
index 4ee06dea2ba..261bc135881 100644
--- a/tests/pfcwd/files/pfcwd_helper.py
+++ b/tests/pfcwd/files/pfcwd_helper.py
@@ -225,10 +225,20 @@ def select_test_ports(test_ports):
         selected_ports (dict): random port info or set of ports matching seed
     """
     selected_ports = dict()
+    rx_ports = set()
     seed = int(datetime.datetime.today().day)
-    for key, value in test_ports.items():
-        if (int(value['test_port_id']) % 15) == (seed % 15):
-            selected_ports.update({key:value})
+    for port, port_info in test_ports.items():
+        rx_port = port_info["rx_port"]
+        if isinstance(rx_port, (list, tuple)):
+            rx_ports.update(rx_port)
+        else:
+            rx_ports.add(rx_port)
+        if (int(port_info['test_port_id']) % 15) == (seed % 15):
+            selected_ports[port] = port_info
+
+    # filter out selected ports that also act as rx ports
+    selected_ports = {p: pi for p, pi in selected_ports.items()
+                      if p not in rx_port}
 
     if not selected_ports:
         random_port = test_ports.keys()[0]