diff --git a/services/document-updater/app/coffee/ProjectHistoryRedisManager.coffee b/services/document-updater/app/coffee/ProjectHistoryRedisManager.coffee
index 31842a1c8f..af75487a90 100644
--- a/services/document-updater/app/coffee/ProjectHistoryRedisManager.coffee
+++ b/services/document-updater/app/coffee/ProjectHistoryRedisManager.coffee
@@ -1,7 +1,6 @@
 Settings = require('settings-sharelatex')
 projectHistoryKeys = Settings.redis?.project_history?.key_schema
-#rclient = require("redis-sharelatex").createClient(Settings.redis.project_history)
-rclient = require("./RedisMigrationManager").createClient(Settings.redis.project_history, Settings.redis.new_project_history)
+rclient = require("redis-sharelatex").createClient(Settings.redis.project_history)
 logger = require('logger-sharelatex')
 metrics = require('./Metrics')
 
diff --git a/services/document-updater/config/settings.defaults.coffee b/services/document-updater/config/settings.defaults.coffee
index 6724aa6a9a..2fb398251a 100755
--- a/services/document-updater/config/settings.defaults.coffee
+++ b/services/document-updater/config/settings.defaults.coffee
@@ -37,23 +37,12 @@ module.exports =
 				docsWithHistoryOps: ({project_id}) -> "DocsWithHistoryOps:{#{project_id}}"
 
 		project_history:
-			port: process.env["HISTORY_REDIS_PORT"] or process.env["REDIS_PORT"] or "6379"
-			host: process.env["HISTORY_REDIS_HOST"] or process.env["REDIS_HOST"] or "localhost"
-			password: process.env["HISTORY_REDIS_PASSWORD"] or process.env["REDIS_PASSWORD"] or ""
-			maxRetriesPerRequest: parseInt(process.env['REDIS_MAX_RETRIES_PER_REQUEST'] or "20")
-			key_schema:
-				projectHistoryOps: ({project_id}) -> "ProjectHistory:Ops:{#{project_id}}"
-				projectHistoryFirstOpTimestamp: ({project_id}) -> "ProjectHistory:FirstOpTimestamp:{#{project_id}}"
-
-		new_project_history:
 			port: process.env["NEW_HISTORY_REDIS_PORT"] or "6379"
 			host: process.env["NEW_HISTORY_REDIS_HOST"]
 			password: process.env["NEW_HISTORY_REDIS_PASSWORD"] or ""
 			key_schema:
 				projectHistoryOps: ({project_id}) -> "ProjectHistory:Ops:{#{project_id}}"
 				projectHistoryFirstOpTimestamp: ({project_id}) -> "ProjectHistory:FirstOpTimestamp:{#{project_id}}"
-				projectHistoryMigrationKey: ({project_id}) -> "ProjectHistory:MigrationKey:{#{project_id}}"
-			migration_phase: process.env["PROJECT_HISTORY_MIGRATION_PHASE"] or "prepare"
 			redisOptions:
 				keepAlive: 100
 
diff --git a/services/document-updater/test/unit/coffee/ProjectHistoryRedisManager/ProjectHistoryRedisManagerTests.coffee b/services/document-updater/test/unit/coffee/ProjectHistoryRedisManager/ProjectHistoryRedisManagerTests.coffee
index 7199002162..9810b77d5f 100644
--- a/services/document-updater/test/unit/coffee/ProjectHistoryRedisManager/ProjectHistoryRedisManagerTests.coffee
+++ b/services/document-updater/test/unit/coffee/ProjectHistoryRedisManager/ProjectHistoryRedisManagerTests.coffee
@@ -24,8 +24,6 @@ describe "ProjectHistoryRedisManager", ->
 				}
 				"redis-sharelatex":
 					createClient: () => @rclient
-				"./RedisMigrationManager":
-					createClient: () => @rclient
 				"logger-sharelatex":
 					log:->
 				"./Metrics": @metrics = { summary: sinon.stub()}