diff --git a/src/sonic-device-data/tests/hwsku_json_checker b/src/sonic-device-data/tests/hwsku_json_checker
index 6fd3d82c4c..ee15c6fb4b 100755
--- a/src/sonic-device-data/tests/hwsku_json_checker
+++ b/src/sonic-device-data/tests/hwsku_json_checker
@@ -7,7 +7,7 @@ import sys
 
 # Global variable
 PORT_ATTRIBUTES = ["default_brkout_mode"]
-OPTIONAL_PORT_ATTRIBUTES = ["fec", "autoneg"]
+OPTIONAL_PORT_ATTRIBUTES = ["fec", "autoneg", "port_type"]
 PORT_REG = "Ethernet(\d+)"
 HWSKU_JSON = '*hwsku.json'
 INTF_KEY = "interfaces"