diff --git a/src/admin/web/style.css b/src/admin/web/style.css
index 8c651c5..9dc087b 100644
--- a/src/admin/web/style.css
+++ b/src/admin/web/style.css
@@ -1037,7 +1037,7 @@ button.is-saving {
     padding: 12px 16px;
     margin-top: 14px;
     border: 1px solid var(--line);
-    border-radius: var(--radius, 8px);
+    border-radius: var(--rp-radius-surface, 8px);
     overflow-wrap: anywhere;
 }