diff --git a/projects/player/src/app/app.component.ts b/projects/player/src/app/app.component.ts
index 560adaf421592958a6b4b8247f0caf719aeef0c3..9867e344449bd62fe82231e1d414ef90c926f582 100644
--- a/projects/player/src/app/app.component.ts
+++ b/projects/player/src/app/app.component.ts
@@ -62,7 +62,7 @@ export class AppComponent implements OnInit {
       console.log('player: onStart', message);
       if (message.unitDefinition) {
         const unitDefinition: Unit = UnitFactory.createUnit(
-          UnitDefinitionSanitizer.sanitizeUnitDefinition(JSON.parse(message.unitDefinition))
+          UnitDefinitionSanitizer.sanitizeUnitDefinition(JSON.parse(message.unitDefinition))[0]
         );
         this.unitStateElementMapperService.registerDropListValueIds(unitDefinition);
         this.unitStateService.unitStateElementCodes = message.unitState?.dataParts?.elementCodes ?