diff --git a/plugins/Unix/plugin.py b/plugins/Unix/plugin.py
index 5a963980a..b8c063919 100644
--- a/plugins/Unix/plugin.py
+++ b/plugins/Unix/plugin.py
@@ -245,7 +245,7 @@ class Unix(callbacks.Plugin):
                 with open(os.devnull, 'r+') as null:
                     inst = subprocess.Popen([wtfCmd, something],
                                             stdout=subprocess.PIPE,
-                                            stderr=STDOUT,
+                                            stderr=subprocess.STDOUT,
                                             stdin=null)
             except OSError:
                 irc.error(_('It seems the configured wtf command was not '