diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.html b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.html
index a8aa70c878..60ef25f875 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.html
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.html
@@ -262,7 +262,7 @@
                   </mat-form-field>
                 </div>
               </div>
-              <div class="tb-form-row column-xs" fxLayoutAlign="space-between center">
+              <div *ngIf="this.slaveConfigFormGroup.get('type').value !== ModbusProtocolType.Serial" class="tb-form-row column-xs" fxLayoutAlign="space-between center">
                 <div class="fixed-title-width" translate>gateway.word-order</div>
                 <div class="tb-flex no-gap">
                   <mat-form-field class="tb-flex no-gap" appearance="outline" subscriptSizing="dynamic">
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.ts
index f01bbf7618..8c6fb87e11 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/modbus/modbus-slave-dialog/modbus-slave-dialog.component.ts
@@ -105,7 +105,7 @@ export class ModbusSlaveDialogComponent extends DialogComponent<ModbusSlaveDialo
   readonly modbusHelpLink =
     'https://thingsboard.io/docs/iot-gateway/config/modbus/#section-master-description-and-configuration-parameters';
   readonly serialSpecificControlKeys = ['serialPort', 'baudrate', 'stopbits', 'bytesize', 'parity', 'strict'];
-  readonly tcpUdpSpecificControlKeys = ['port', 'security', 'host'];
+  readonly tcpUdpSpecificControlKeys = ['port', 'security', 'host', 'wordOrder'];
 
   private destroy$ = new Subject<void>();