diff --git a/x-pack/packages/kbn-ai-assistant/src/chat/chat_body.tsx b/x-pack/packages/kbn-ai-assistant/src/chat/chat_body.tsx
index 12cb747d148c4..e1cf3fa83f4bc 100644
--- a/x-pack/packages/kbn-ai-assistant/src/chat/chat_body.tsx
+++ b/x-pack/packages/kbn-ai-assistant/src/chat/chat_body.tsx
@@ -136,7 +136,7 @@ export function ChatBody({
 
   const { conversation, messages, next, state, stop, saveTitle } = useConversation({
     initialConversationId,
-    initialMessages,
+    ...(!initialConversationId ? { initialMessages } : {}),
     initialTitle,
     chatService,
     connectorId: connectors.selectedConnector,