diff --git a/letsencrypt/interfaces.py b/letsencrypt/interfaces.py
index 1921b1e54..188a4d9da 100644
--- a/letsencrypt/interfaces.py
+++ b/letsencrypt/interfaces.py
@@ -443,6 +443,20 @@ class IDisplay(zope.interface.Interface):
 
         """
 
+    def directory_select(self, message, default=None, cli_flag=None):
+        """Display a directory selection screen.
+
+        :param str message: prompt to give the user
+        :param default: the default value to return, if one exists, when
+            using the NoninteractiveDisplay
+        :param str cli_flag: option used to set this value with the CLI
+
+        :returns: tuple of the form (`code`, `string`) where
+            `code` - int display exit code
+            `string` - input entered by the user
+
+        """
+
 
 class IValidator(zope.interface.Interface):
     """Configuration validator."""