diff --git a/plexpy/api2.py b/plexpy/api2.py
index 9325dc08..c541b84d 100644
--- a/plexpy/api2.py
+++ b/plexpy/api2.py
@@ -598,7 +598,7 @@ General optional parameters:
         if self._api_cmd == 'docs_md':
             return out['response']['data']
 
-        elif self._api_cmd.startswith('download_'):
+        elif self._api_cmd and self._api_cmd.startswith('download_'):
             return
 
         elif self._api_cmd == 'pms_image_proxy':