diff --git a/platypush/plugins/media/mpv.py b/platypush/plugins/media/mpv.py
index e7d1394b..531b4c6d 100644
--- a/platypush/plugins/media/mpv.py
+++ b/platypush/plugins/media/mpv.py
@@ -60,7 +60,7 @@ class MediaMpvPlugin(MediaPlugin):
         if args:
             mpv_args.update(args)
 
-        for k,v in self._env:
+        for k,v in self._env.items():
             os.environ[k] = v
 
         self._player = mpv.MPV(**mpv_args)