diff --git a/backend/server.js b/backend/server.js
index 9186037..6d4f765 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -11,7 +11,7 @@ const mongoUri = process.env.MONGO_URI || 'mongodb://127.0.0.1:27017/default?rep
 const minioURI = new URL(process.env.MINIO_URI || 'http://kspace-mugshot:2mSI6HdbJ8@127.0.0.1:9000/kspace-mugshot');
 const minioBucket = minioURI.pathname.substring(1);
 console.info("Using bucket:", minioBucket);
-const historyNumber = parseInt(process.env.HISTORY_AMOUNT) || 10;
+const historyNumber = parseInt(process.env.HISTORY_AMOUNT) || 1000;
 
 // Stream set-up variables
 let changeStream;
@@ -46,14 +46,15 @@ async function run() {
     });
 
     async function wrapEvent(doc) {
+      let newDoc;
       if (doc && doc.screenshot_count) {
-        doc.screenshots = [];
+        newDoc = {...doc, screenshots: []}
         for (let i = 1; i <= doc.screenshot_count ; i++) {
           let presignedUrl = await minioClient.presignedUrl('GET', minioBucket, `${doc.camera}/${doc._id}/${i}.jpg`, 60 * 60);
-          doc.screenshots.push({ url: presignedUrl });
+          newDoc.screenshots.push({ url: presignedUrl });
         }
       };
-      let blob = JSON.stringify(doc);
+      let blob = JSON.stringify(newDoc);
       return `event: log-entry\ndata: ${blob}\n\n`
     }