diff --git a/sonic-xcvrd/xcvrd/xcvrd_utilities/port_mapping.py b/sonic-xcvrd/xcvrd/xcvrd_utilities/port_mapping.py
index c7965f343..788dc8134 100644
--- a/sonic-xcvrd/xcvrd/xcvrd_utilities/port_mapping.py
+++ b/sonic-xcvrd/xcvrd/xcvrd_utilities/port_mapping.py
@@ -92,7 +92,7 @@ def logical_port_name_to_physical_port_list(self, port_name):
                 return None
 
 def validate_port(port):
-    if port.startswith((backplane_prefix(), inband_prefix(), recirc_prefix())):
+    if port.startswith((backplane_prefix(), inband_prefix(), recirc_prefix())) or '.' in port:
         return False
     return True