diff --git a/frontend/packages/swarm-ui/src/shell/Shell.tsx b/frontend/packages/swarm-ui/src/shell/Shell.tsx
index 6d23763b..77a989aa 100644
--- a/frontend/packages/swarm-ui/src/shell/Shell.tsx
+++ b/frontend/packages/swarm-ui/src/shell/Shell.tsx
@@ -164,6 +164,7 @@ function DynamicTabLink({
         type="button"
         class="shell-tab-close"
         title={`close ${label}`}
+        aria-label={`close ${label}`}
         onClick={(e) => {
           // Not a navigation — stop it reaching `Link`'s own click
           // handling even though this button sits outside the anchor,