diff --git a/services/project-history/app/js/HttpController.js b/services/project-history/app/js/HttpController.js
index 5746c741c6..d49fbd39d0 100644
--- a/services/project-history/app/js/HttpController.js
+++ b/services/project-history/app/js/HttpController.js
@@ -20,10 +20,10 @@ import { pipeline } from 'stream'
 const ONE_DAY_IN_SECONDS = 24 * 60 * 60
 
 export function getProjectBlob(req, res, next) {
-  const projectId = req.params.project_id
+  const historyId = req.params.history_id
   const blobHash = req.params.hash
   HistoryStoreManager.getProjectBlobStream(
-    projectId,
+    historyId,
     blobHash,
     (err, stream) => {
       if (err != null) {
diff --git a/services/project-history/app/js/Router.js b/services/project-history/app/js/Router.js
index 851b750735..cdf550ee73 100644
--- a/services/project-history/app/js/Router.js
+++ b/services/project-history/app/js/Router.js
@@ -183,7 +183,7 @@ export function initialize(app) {
     HttpController.forceDebugProject
   )
 
-  app.get('/project/:project_id/blob/:hash', HttpController.getProjectBlob)
+  app.get('/project/:history_id/blob/:hash', HttpController.getProjectBlob)
 
   app.get('/status/failures', HttpController.getFailures)
 
diff --git a/services/project-history/test/unit/js/HttpController/HttpControllerTests.js b/services/project-history/test/unit/js/HttpController/HttpControllerTests.js
index 273bd1d867..834c3b8183 100644
--- a/services/project-history/test/unit/js/HttpController/HttpControllerTests.js
+++ b/services/project-history/test/unit/js/HttpController/HttpControllerTests.js
@@ -92,9 +92,10 @@ describe('HttpController', function () {
     beforeEach(function () {
       this.blobHash = 'abcd'
       this.stream = {}
+      this.historyId = 1337
       this.HistoryStoreManager.getProjectBlobStream.yields(null, this.stream)
       this.HttpController.getProjectBlob(
-        { params: { project_id: this.projectId, hash: this.blobHash } },
+        { params: { history_id: this.historyId, hash: this.blobHash } },
         this.res,
         this.next
       )
@@ -102,7 +103,7 @@ describe('HttpController', function () {
 
     it('should get a blob stream', function () {
       this.HistoryStoreManager.getProjectBlobStream
-        .calledWith(this.projectId, this.blobHash)
+        .calledWith(this.historyId, this.blobHash)
         .should.equal(true)
       this.pipeline.should.have.been.calledWith(this.stream, this.res)
     })
diff --git a/services/web/app/src/Features/History/HistoryController.js b/services/web/app/src/Features/History/HistoryController.js
index 6c76ba5b22..eadf71f1b2 100644
--- a/services/web/app/src/Features/History/HistoryController.js
+++ b/services/web/app/src/Features/History/HistoryController.js
@@ -38,6 +38,30 @@ module.exports = HistoryController = {
     })
   },
 
+  getBlob(req, res, next) {
+    const { project_id: projectId, blob } = req.params
+
+    ProjectGetter.getProject(
+      projectId,
+      { 'overleaf.history.id': true },
+      (err, project) => {
+        if (err) return next(err)
+
+        const url = new URL(settings.apis.project_history.url)
+        url.pathname = `/project/${project.overleaf.history.id}/blob/${blob}`
+
+        pipeline(request(url.href), res, err => {
+          // If the downstream request is cancelled, we get an
+          // ERR_STREAM_PREMATURE_CLOSE.
+          if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
+            logger.warn({ url, err }, 'history API error')
+            next(err)
+          }
+        })
+      }
+    )
+  },
+
   proxyToHistoryApiAndInjectUserDetails(req, res, next) {
     const userId = SessionManager.getLoggedInUserId(req.session)
     const url = settings.apis.project_history.url + req.url