diff --git a/artiq/language/environment.py b/artiq/language/environment.py
index edb8865b1..a80701c78 100644
--- a/artiq/language/environment.py
+++ b/artiq/language/environment.py
@@ -89,6 +89,8 @@ class EnumerationValue(_SimpleArgProcessor):
 
     :param choices: A list of string representing the possible values of the
         argument.
+    :param quickstyle: Enables the choices to be displayed in the GUI as a 
+        list of buttons that submit the experiment when clicked.
     """
     def __init__(self, choices, default=NoDefault, quickstyle=False):
         self.choices = choices