diff --git a/services/document-updater/app/js/PersistenceManager.js b/services/document-updater/app/js/PersistenceManager.js
index 6e832f9aa7..c357812326 100644
--- a/services/document-updater/app/js/PersistenceManager.js
+++ b/services/document-updater/app/js/PersistenceManager.js
@@ -102,6 +102,13 @@ function getDoc(projectId, docId, options = {}, _callback) {
         body.ranges = {}
       }
 
+      if (!body.projectHistoryId) {
+        logger.warn(
+          { projectId, docId },
+          'projectHistoryId not found for doc from web'
+        )
+      }
+
       callback(
         null,
         body.lines,
diff --git a/services/document-updater/app/js/RedisManager.js b/services/document-updater/app/js/RedisManager.js
index 1dc20fdf38..84bc288872 100644
--- a/services/document-updater/app/js/RedisManager.js
+++ b/services/document-updater/app/js/RedisManager.js
@@ -282,6 +282,13 @@ const RedisManager = {
       })
     }
 
+    if (!projectHistoryId) {
+      logger.warn(
+        { docId, projectId },
+        'projectHistoryId not found for doc in Redis'
+      )
+    }
+
     return {
       lines: docLines,
       version,