diff --git a/gertty/config.py b/gertty/config.py
index 2b099f5..b4812a7 100644
--- a/gertty/config.py
+++ b/gertty/config.py
@@ -98,7 +98,7 @@ class ConfigSchema(object):
                            'reverse': bool}
 
     keymap = {v.Required('name'): str,
-              v.Match('(?!name)'): v.Any([str], str)}
+              v.Match('(?!name)'): v.Any([[str], str], [str], str)}
 
     keymaps = [keymap]