diff --git a/apps/client/src/services/content_renderer.ts b/apps/client/src/services/content_renderer.ts
index aef64291fb..0021660f39 100644
--- a/apps/client/src/services/content_renderer.ts
+++ b/apps/client/src/services/content_renderer.ts
@@ -218,14 +218,14 @@ function renderFile(entity: FNote | FAttachment, type: string, $renderedContent:
         //       in attachment list
         const $downloadButton = $(`
             <button class="file-download btn btn-primary" type="button">
-                <span class="bx bx-download"></span>
+                <span class="tn-icon bx bx-download"></span>
                 ${t("file_properties.download")}
             </button>
         `);
 
         const $openButton = $(`
             <button class="file-open btn btn-primary" type="button">
-                <span class="bx bx-link-external"></span>
+                <span class="tn-icon bx bx-link-external"></span>
                 ${t("file_properties.open")}
             </button>
         `);