diff --git a/lib/components/JsonSchema/json-schema.html b/lib/components/JsonSchema/json-schema.html
index 8ab87420..07c7853b 100644
--- a/lib/components/JsonSchema/json-schema.html
+++ b/lib/components/JsonSchema/json-schema.html
@@ -83,7 +83,7 @@
               <span *ngIf="prop.pattern" class="param-pattern">{{prop.pattern}}</span>
             </div>
             <div class="param-description" [innerHtml]="prop.description | marked"></div>
-            <div class="discriminator-info" *ngIf="prop.isDiscriminator">
+            <div class="discriminator-info" *ngIf="prop.isDiscriminator && descendants.length">
               <drop-down (change)="selectDescendantByIdx($event)" [active]="activeDescendant.idx">
                 <option *ngFor="let descendant of descendants; let i=index"
                 [value]="i" [attr.selected]="descendant.active ? '' : null" >{{descendant.name}}</option>