diff --git a/src/QueueMessage.js b/src/QueueMessage.js
index 7a146e0..2fbe424 100644
--- a/src/QueueMessage.js
+++ b/src/QueueMessage.js
@@ -51,12 +51,12 @@ class QueueMessage {
   static unserialize (buffer, ContentSchema = JSON) {
     if (!ContentSchema || ContentSchema === JSON) {
       if (buffer.toString('utf8', 0, 1) === '+') {
-        const jsonLength = buffer.slice(1, 5).readUInt32BE()
+        const jsonLength = buffer.subarray(1, 5).readUInt32BE()
         const { status, data, timeOut, attachArray } = JSON.parse(buffer.toString('utf8', 5, 5 + jsonLength))
         let prevAttachmentLength = 5 + jsonLength
         const queueMessage = new this(status, data, timeOut, ContentSchema)
         for (const [key, length] of attachArray) {
-          queueMessage.addAttachment(key, buffer.slice(prevAttachmentLength, prevAttachmentLength + length))
+          queueMessage.addAttachment(key, buffer.subarray(prevAttachmentLength, prevAttachmentLength + length))
           prevAttachmentLength = prevAttachmentLength + length
         }
 
diff --git a/test/Gathering.test.js b/test/Gathering.test.js
index 5ab9d81..9d32690 100644
--- a/test/Gathering.test.js
+++ b/test/Gathering.test.js
@@ -87,7 +87,7 @@ describe('GatheringClient && GatheringServer', () => {
       if (!response.hasAttachment('test')) {
         done(new Error('Missing attachment name "test" from response'))
       }
-      if (!response.getAttachment('test') === buf) {
+      if (response.getAttachment('test') !== buf) {
         done(new Error('Attachment name "test" is not the same'))
       }
       return msg
diff --git a/test/RPC.test.js b/test/RPC.test.js
index 2229a2a..56cf12b 100644
--- a/test/RPC.test.js
+++ b/test/RPC.test.js
@@ -116,7 +116,7 @@ describe('RPCClient && RPCServer', () => {
       if (!response.hasAttachment('test')) {
         done(new Error('Missing attachment name "test" from response'))
       }
-      if (!response.getAttachment('test') === buf) {
+      if (response.getAttachment('test') !== buf) {
         done(new Error('Attachment name "test" is not the same'))
       }
       return msg