diff --git a/mopidy/utils/config.py b/mopidy/utils/config.py
index e20afd26..3b695087 100644
--- a/mopidy/utils/config.py
+++ b/mopidy/utils/config.py
@@ -63,7 +63,7 @@ class ConfigValue(object):
     maximum = None
 
     #: Indicate if this field is required.
-    opitional = None
+    optional = None
 
     #: Indicate if we should mask the when printing for human consumption.
     secret = None