diff --git a/src-ui/src/app/components/document-detail/document-detail.component.html b/src-ui/src/app/components/document-detail/document-detail.component.html
index 989c998f1..755333700 100644
--- a/src-ui/src/app/components/document-detail/document-detail.component.html
+++ b/src-ui/src/app/components/document-detail/document-detail.component.html
@@ -143,7 +143,7 @@
             </ng-template>
         </ng-container>
         <ng-container *ngIf="getContentType() == 'text/plain'">
-            <object [data]="previewUrl | safe" type="text/plain" class="preview-sticky" width="100%"></object>
+            <object [data]="previewUrl | safe" type="text/plain" class="preview-sticky bg-white" width="100%"></object>
         </ng-container>
 
     </div>