diff --git a/src/Types/Chat.ts b/src/Types/Chat.ts
index edba11d..8bd0fe5 100644
--- a/src/Types/Chat.ts
+++ b/src/Types/Chat.ts
@@ -33,8 +33,8 @@ export type Chat = Omit<proto.IConversation, 'messages'> & {
     archive?: boolean
 }
 /**
- * the last messages in a chat, sorted reverse-chronologically
- * for MD modifications, the last message in the array must be the last message recv in the chat
+ * the last messages in a chat, sorted reverse-chronologically. That is, the latest message should be first in the chat
+ * for MD modifications, the last message in the array (i.e. the earlist message) must be the last message recv in the chat
  * */
 export type LastMessageList = Pick<proto.IWebMessageInfo, 'key' | 'messageTimestamp'>[]
 
diff --git a/src/Utils/chat-utils.ts b/src/Utils/chat-utils.ts
index 3521222..08112ee 100644
--- a/src/Utils/chat-utils.ts
+++ b/src/Utils/chat-utils.ts
@@ -447,18 +447,10 @@ export const chatModificationToAppPatch = (
 ) => {
 	const OP = proto.SyncdMutation.SyncdMutationSyncdOperation
 	const getMessageRange = (lastMessages: LastMessageList) => {
-		if(!lastMessages?.length) {
-			throw new Boom('Expected last message to be not from me', { statusCode: 400 })
-		}
-
 		const lastMsg = lastMessages[lastMessages.length - 1]
-		if(lastMsg.key.fromMe) {
-			throw new Boom('Expected last message in array to be not from me', { statusCode: 400 })
-		}
-
 		const messageRange: proto.ISyncActionMessageRange = {
 			lastMessageTimestamp: lastMsg?.messageTimestamp,
-			messages: lastMessages.map(
+			messages: lastMessages?.length ? lastMessages.map(
 				m => {
 					if(m.key.participant) {
 						m.key = { ...m.key }
@@ -467,7 +459,7 @@ export const chatModificationToAppPatch = (
 
 					return m
 				}
-			)
+			) : undefined
 		}
 		return messageRange
 	}