diff --git a/src/app/workspace/resource/resource-instance-form/select-resource-class/select-resource-class.component.ts b/src/app/workspace/resource/resource-instance-form/select-resource-class/select-resource-class.component.ts
index 774731fe76..178b1405b9 100644
--- a/src/app/workspace/resource/resource-instance-form/select-resource-class/select-resource-class.component.ts
+++ b/src/app/workspace/resource/resource-instance-form/select-resource-class/select-resource-class.component.ts
@@ -39,7 +39,7 @@ export class SelectResourceClassComponent implements OnInit, OnDestroy, AfterVie
 
     form: FormGroup;
 
-    checkPattern = '^\d*[a-zA-Z0-9_]+( [a-zA-Z0-9@_.]+)*$';
+    checkPattern = '^\d*[a-zA-Z0-9\u00C0-\u024F\u1E00-\u1EFF_]+( [a-zA-Z0-9\u00C0-\u024F\u1E00-\u1EFF@_.]+)*$';
 
     resourceChangesSubscription: Subscription;