diff --git a/zproject/prod_settings_template.py b/zproject/prod_settings_template.py
index 8df10b1672..a047e4805b 100644
--- a/zproject/prod_settings_template.py
+++ b/zproject/prod_settings_template.py
@@ -298,6 +298,8 @@ LOCAL_UPLOADS_DIR = "/home/zulip/uploads"
 # Maximum allowed size of uploaded files, in megabytes.  DO NOT SET
 # ABOVE 80MB.  The file upload implementation doesn't support chunked
 # uploads, so browsers will crash if you try uploading larger files.
+# Set MAX_FILE_UPLOAD_SIZE to 0 to disable file uploads completely
+# (including hiding upload-related options from UI).
 MAX_FILE_UPLOAD_SIZE = 25
 
 # Controls whether name changes are completely disabled for this