diff --git a/frontend/src/components/SchedulePage.jsx b/frontend/src/components/SchedulePage.jsx
index 853276c..d6e9ee2 100644
--- a/frontend/src/components/SchedulePage.jsx
+++ b/frontend/src/components/SchedulePage.jsx
@@ -1113,7 +1113,7 @@ function ScheduleView({ events, selectedDate, onSelect, filterKeyword='', filter
           : BELL_ICON
     );
     return(
-      <div key={e.id} onClick={()=>onSelect(e)} style={{display:'flex',alignItems:'center',gap:rowGap,padding:rowPad,borderBottom:'1px solid var(--border)',cursor:'pointer',opacity:isPast?0.7:1}} onMouseEnter={el=>el.currentTarget.style.background='var(--background)'} onMouseLeave={el=>el.currentTarget.style.background=''}>
+      <div key={`${e.id}-${e.start_at}`} onClick={()=>onSelect(e)} style={{display:'flex',alignItems:'center',gap:rowGap,padding:rowPad,borderBottom:'1px solid var(--border)',cursor:'pointer',opacity:isPast?0.7:1}} onMouseEnter={el=>el.currentTarget.style.background='var(--background)'} onMouseLeave={el=>el.currentTarget.style.background=''}>
         {/* Date column */}
         <div style={{width:datW,textAlign:'center',flexShrink:0}}>
           <div style={{fontSize:datFs,fontWeight:700,lineHeight:1,color:textColor}}>{s.getDate()}</div>