diff --git a/services/web/frontend/stylesheets/modules/symbol-palette.scss b/services/web/frontend/stylesheets/modules/symbol-palette.scss
index 9aefcb4084..83a84769db 100644
--- a/services/web/frontend/stylesheets/modules/symbol-palette.scss
+++ b/services/web/frontend/stylesheets/modules/symbol-palette.scss
@@ -162,6 +162,7 @@
   --bs-btn-close-color: var(--symbol-palette-color);
 
   [data-theme='default'] & {
+    --bs-btn-close-bg: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23ffffff'%3e%3cpath d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414'/%3e%3c/svg%3e");
     filter: var(--bs-btn-close-white-filter);
   }