diff --git a/src/components/events/EventAnnotations.tsx b/src/components/events/EventAnnotations.tsx
index aefd7007..88ded451 100644
--- a/src/components/events/EventAnnotations.tsx
+++ b/src/components/events/EventAnnotations.tsx
@@ -325,8 +325,11 @@ export default function EventAnnotations({
                                 setShowActionsFor(showActionsFor === thread.id ? null : thread.id)
                               }
                               className="rounded-lg p-1.5 text-[#9CA3AF] hover:bg-[#F8FAFC] hover:text-[#666666] transition-colors"
+                              aria-label="More actions"
+                              aria-expanded={showActionsFor === thread.id}
+                              aria-haspopup="menu"
                             >
-                              <MoreHorizontal className="size-4" />
+                              <MoreHorizontal className="size-4" aria-hidden="true" />
                             </button>
 
                             <AnimatePresence>