diff --git a/spec/openapi.yaml b/spec/openapi.yaml
index 9f0f7eab..15eb316e 100644
--- a/spec/openapi.yaml
+++ b/spec/openapi.yaml
@@ -1836,7 +1836,7 @@ paths:
         Download ZIP archive with the requested translated files.
 
         Unlike "Download all translations of the file" you can specify multiple
-        file URIs and locale IDs to select which files and languages you want to download.
+        file URIs (limit is 300 files) and locale IDs to select which files and languages you want to download.
 
         It is important to check the HTTP response status code. If Smartling
         finds and returns the file normally, you will receive a `200` SUCCESS
@@ -1867,7 +1867,7 @@ paths:
         schema:
           type: string
       - name: 'fileUris[]'
-        description: Smartling values that each uniquely identify a file.
+        description: Smartling values that each uniquely identify a file. The limit is 300 files.
         explode: true
         in: query
         required: true