diff --git a/src/Socket/messages-recv.ts b/src/Socket/messages-recv.ts
index 24e50217..977bb4f6 100644
--- a/src/Socket/messages-recv.ts
+++ b/src/Socket/messages-recv.ts
@@ -1111,7 +1111,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		// TODO: temporary fix for crashes and issues resulting of failed msmsg decryption
 		if (encNode && encNode.attrs.type === 'msmsg') {
 			logger.debug({ key: node.attrs.key }, 'ignored msmsg')
-			await sendMessageAck(node)
+			await sendMessageAck(node, NACK_REASONS.MissingMessageSecret)
 			return
 		}
 
diff --git a/src/Utils/decode-wa-message.ts b/src/Utils/decode-wa-message.ts
index 4afe13d1..6e0b3082 100644
--- a/src/Utils/decode-wa-message.ts
+++ b/src/Utils/decode-wa-message.ts
@@ -306,7 +306,7 @@ export const decryptMessageNode = (
 						logger.error(errorContext, 'failed to decrypt message')
 
 						fullMessage.messageStubType = proto.WebMessageInfo.StubType.CIPHERTEXT
-						fullMessage.messageStubParameters = [err.message]
+						fullMessage.messageStubParameters = [err.message.toString()]
 					}
 				}
 			}