diff --git a/src/components/tickets/ticket-chat-history.tsx b/src/components/tickets/ticket-chat-history.tsx
index 76e5054..99a4695 100644
--- a/src/components/tickets/ticket-chat-history.tsx
+++ b/src/components/tickets/ticket-chat-history.tsx
@@ -339,12 +339,13 @@ export function TicketChatHistory({ ticketId }: ChatHistoryProps) {
   )
 
   // Agrupar sessoes por dia
+  const sessions = chatHistory?.sessions
   const dayGroups = useMemo(() => {
-    if (!chatHistory?.sessions) return []
+    if (!sessions) return []
 
     const groups = new Map<string, DayGroup>()
 
-    chatHistory.sessions.forEach((session: ChatSession) => {
+    sessions.forEach((session: ChatSession) => {
       const sessionDate = new Date(session.startedAt)
       const dayStart = startOfDay(sessionDate)
       const dateKey = dayStart.toISOString()
@@ -371,7 +372,7 @@ export function TicketChatHistory({ ticketId }: ChatHistoryProps) {
 
     // Retornar grupos ordenados por data (mais recente primeiro)
     return Array.from(groups.values()).sort((a, b) => b.date.getTime() - a.date.getTime())
-  }, [chatHistory?.sessions])
+  }, [sessions])
 
   const displayedDays = dayGroups.slice(0, visibleDays)
   const hasMoreDays = dayGroups.length > visibleDays