diff --git a/src/App.tsx b/src/App.tsx
index fd5ecb5..a948f4c 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -51,9 +51,16 @@ function App() {
     } else {
       // existing local storage
       const chats = useStore.getState().chats;
+      const currentChatIndex = useStore.getState().currentChatIndex;
       if (!chats || chats.length === 0) {
         initialiseNewChat();
       }
+      if (
+        chats &&
+        !(currentChatIndex >= 0 && currentChatIndex < chats.length)
+      ) {
+        setCurrentChatIndex(0);
+      }
     }
   }, []);
 
diff --git a/src/components/Chat/ChatContent/ChatContent.tsx b/src/components/Chat/ChatContent/ChatContent.tsx
index 8e44537..4c7a398 100644
--- a/src/components/Chat/ChatContent/ChatContent.tsx
+++ b/src/components/Chat/ChatContent/ChatContent.tsx
@@ -14,10 +14,20 @@ const ChatContent = () => {
   const inputRole = useStore((state) => state.inputRole);
   const setError = useStore((state) => state.setError);
   const messages = useStore((state) =>
-    state.chats ? state.chats[state.currentChatIndex].messages : []
+    state.chats &&
+    state.chats.length > 0 &&
+    state.currentChatIndex >= 0 &&
+    state.currentChatIndex < state.chats.length
+      ? state.chats[state.currentChatIndex].messages
+      : []
   );
   const stickyIndex = useStore((state) =>
-    state.chats ? state.chats[state.currentChatIndex].messages.length : 0
+    state.chats &&
+    state.chats.length > 0 &&
+    state.currentChatIndex >= 0 &&
+    state.currentChatIndex < state.chats.length
+      ? state.chats[state.currentChatIndex].messages.length
+      : 0
   );
 
   const { handleSubmit, error } = useSubmit();
diff --git a/src/components/MobileBar/MobileBar.tsx b/src/components/MobileBar/MobileBar.tsx
index 29812ec..0288830 100644
--- a/src/components/MobileBar/MobileBar.tsx
+++ b/src/components/MobileBar/MobileBar.tsx
@@ -6,7 +6,10 @@ import useAddChat from '@hooks/useAddChat';
 
 const MobileBar = () => {
   const chatTitle = useStore((state) =>
-    state.chats && state.chats.length > 0
+    state.chats &&
+    state.chats.length > 0 &&
+    state.currentChatIndex >= 0 &&
+    state.currentChatIndex < state.chats.length
       ? state.chats[state.currentChatIndex].title
       : 'New Chat'
   );