diff --git a/services/document-updater/app/coffee/RedisManager.coffee b/services/document-updater/app/coffee/RedisManager.coffee
index 82125310b4..d2ab35a3ee 100644
--- a/services/document-updater/app/coffee/RedisManager.coffee
+++ b/services/document-updater/app/coffee/RedisManager.coffee
@@ -31,7 +31,7 @@ MAX_RANGES_SIZE = 3 * MEGABYTES
 
 keys = Settings.redis.documentupdater.key_schema
 historyKeys = Settings.redis.history.key_schema
-projectHistoryKeys = Settings.redis.project_history.key_schema
+projectHistoryKeys = Settings.redis?.project_history?.key_schema
 
 module.exports = RedisManager =
 	rclient: rclient