diff --git a/i18n/en.json b/i18n/en.json
index 7275910878..faab739335 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -4636,7 +4636,7 @@
   },
   {
     "id": "model.post.is_valid.file_ids.app_error",
-    "translation": "Invalid file ids"
+    "translation": "Invalid file ids. Note that uploads are limited to 5 files maximum. Please use additional posts for more files."
   },
   {
     "id": "model.post.is_valid.filenames.app_error",