diff --git a/sonic-ycabled/tests/test_y_cable_helper.py b/sonic-ycabled/tests/test_y_cable_helper.py
index b4a5b7b17131..93c1eeedbc42 100644
--- a/sonic-ycabled/tests/test_y_cable_helper.py
+++ b/sonic-ycabled/tests/test_y_cable_helper.py
@@ -4627,6 +4627,61 @@ def get_mux_direction():
                 fvp, xcvrd_config_hwmode_state_cmd_sts_tbl,  xcvrd_config_hwmode_state_rsp_tbl, asic_index, port)
             assert(rc == None)
 
+    @patch('swsscommon.swsscommon.Table')
+    @patch('ycable.ycable_utilities.y_cable_helper.y_cable_platform_sfputil')
+    @patch('ycable.ycable_utilities.y_cable_helper.gather_arg_from_db_and_check_for_type', MagicMock(return_value=(0, "activate_firmware", {"modex": "0",
+                                                                                                                                            "lane_mask": "0",
+                                                                                                                                            "direction": "0"})))
+    @patch('ycable.ycable_utilities.y_cable_helper.get_ycable_physical_port_from_logical_port', MagicMock(return_value=(0)))
+    @patch('ycable.ycable_utilities.y_cable_helper.logical_port_name_to_physical_port_list', MagicMock(return_value=[0]))
+    @patch('ycable.ycable_utilities.y_cable_helper.y_cable_wrapper_get_presence', MagicMock(return_value=True))
+    @patch('ycable.ycable_utilities.y_cable_helper.y_cable_port_locks', MagicMock(return_value=[0]))
+    @patch('os.path.isfile', MagicMock(return_value=True))
+    @patch('time.sleep', MagicMock(return_value=True))
+    def test_handle_config_mux_state_cmd_arg_tbl_notification_with_instance_cmd_arg(self, mock_swsscommon_table, platform_sfputil):
+
+        mock_table = MagicMock()
+        mock_swsscommon_table.return_value = mock_table
+
+        xcvrd_config_hwmode_state_cmd_sts_tbl = mock_swsscommon_table
+        xcvrd_config_hwmode_state_rsp_tbl = mock_swsscommon_table
+        asic_index = 0
+        task_download_firmware_thread = {}
+        port = "Ethernet0"
+        platform_sfputil.get_asic_id_for_logical_port = 0
+        fvp = {"config": "active"}
+
+        with patch('ycable.ycable_utilities.y_cable_helper.y_cable_port_instances') as patched_util:
+            class PortInstanceHelper():
+                def __init__(self):
+                    self.EEPROM_ERROR = -1
+                    self.TARGET_NIC = 1
+                    self.TARGET_TOR_A = 1
+                    self.TARGET_TOR_B = 1
+                    self.FIRMWARE_DOWNLOAD_STATUS_INPROGRESS = 1
+                    self.FIRMWARE_DOWNLOAD_STATUS_FAILED = 2
+                    self.download_firmware_status = 0
+                    self.SWITCH_COUNT_MANUAL = "manual"
+                    self.SWITCH_COUNT_AUTO = 0
+                    self.SWITCHING_MODE_MANUAL = 0
+                    self.SWITCHING_MODE_AUTO = 1
+
+                def get_read_side(self):
+                    return 3
+
+                def get_switching_mode(self):
+                    return 0
+
+                # Defining function without self argument creates an exception,
+                # which is what we want for this test.
+                def get_mux_direction():
+                    pass
+
+            patched_util.get.return_value = PortInstanceHelper()
+            rc = handle_config_hwmode_state_cmd_arg_tbl_notification(
+                fvp, xcvrd_config_hwmode_state_cmd_sts_tbl,  xcvrd_config_hwmode_state_rsp_tbl, asic_index, port)
+            assert(rc == -1)
+
     @patch('swsscommon.swsscommon.Table')
     @patch('ycable.ycable_utilities.y_cable_helper.gather_arg_from_db_and_check_for_type', MagicMock(return_value=(0, "fec", {"modex": "0",
                                                                                                                               "lane_mask": "0",
diff --git a/sonic-ycabled/ycable/ycable_utilities/y_cable_helper.py b/sonic-ycabled/ycable/ycable_utilities/y_cable_helper.py
index 9a264ba01722..e083b89c4b99 100644
--- a/sonic-ycabled/ycable/ycable_utilities/y_cable_helper.py
+++ b/sonic-ycabled/ycable/ycable_utilities/y_cable_helper.py
@@ -3127,7 +3127,7 @@ def handle_config_hwmode_state_cmd_arg_tbl_notification(fvp, xcvrd_config_hwmode
                         status = -1
                         helper_logger.log_warning("Failed to execute the toggle mux ToR A API for port {} due to {}".format(physical_port,repr(e)))
         else:
-            set_result_and_delete_port('result', status, xcvrd_show_hwmode_state_cmd_sts_tbl[asic_index], xcvrd_config_hwmode_state_rsp_tbl[asic_index], port)
+            set_result_and_delete_port('result', status, xcvrd_config_hwmode_state_cmd_sts_tbl[asic_index], xcvrd_config_hwmode_state_rsp_tbl[asic_index], port)
             helper_logger.log_error(
                 "Error: Could not get valid config read side for cli command config mux hwmode state active/standby Y cable port {}".format(port))
             return -1