diff --git a/services/history-v1/api/controllers/projects.js b/services/history-v1/api/controllers/projects.js
index 15ed076e30..d42e29ab81 100644
--- a/services/history-v1/api/controllers/projects.js
+++ b/services/history-v1/api/controllers/projects.js
@@ -174,7 +174,7 @@ async function getChanges(req, res, next) {
     .slice(since - chunk.getStartVersion())
   changes.unshift(...changesInChunk)
 
-  res.json(changes)
+  res.json(changes.map(change => change.toRaw()))
 }
 
 async function getZip(req, res, next) {
diff --git a/services/history-v1/test/acceptance/js/api/projects.test.js b/services/history-v1/test/acceptance/js/api/projects.test.js
index 7470a98c4f..3c333d8698 100644
--- a/services/history-v1/test/acceptance/js/api/projects.test.js
+++ b/services/history-v1/test/acceptance/js/api/projects.test.js
@@ -244,10 +244,7 @@ describe('project controller', function () {
       expect(response.status).to.equal(HTTPStatus.OK)
       const changes = response.obj
       expect(changes.length).to.equal(21)
-      expect(changes[10].operations[0].operation.textOperation).to.deep.equal([
-        9,
-        'x',
-      ])
+      expect(changes[10].operations[0].textOperation).to.deep.equal([9, 'x'])
     })
 
     it('returns only requested changes', async function () {
@@ -260,10 +257,7 @@ describe('project controller', function () {
       expect(response.status).to.equal(HTTPStatus.OK)
       const changes = response.obj
       expect(changes.length).to.equal(11)
-      expect(changes[2].operations[0].operation.textOperation).to.deep.equal([
-        11,
-        'x',
-      ])
+      expect(changes[2].operations[0].textOperation).to.deep.equal([11, 'x'])
     })
   })