diff --git a/src/util/Injected.js b/src/util/Injected.js
index 86d56ed..da8fb2f 100644
--- a/src/util/Injected.js
+++ b/src/util/Injected.js
@@ -475,7 +475,7 @@ exports.LoadUtils = () => {
         
         res.lastMessage = null;
         if (res.msgs && res.msgs.length) {
-            const lastMessage = window.Store.Msg.get(chat.lastReceivedKey._serialized);
+            const lastMessage = chat.lastReceivedKey ? window.Store.Msg.get(chat.lastReceivedKey._serialized) : null;
             if (lastMessage) {
                 res.lastMessage = window.WWebJS.getMessageModel(lastMessage);
             }