1 files changed, 1 insertions, 0 deletions
diff --git a/lib/highline.rb b/lib/highline.rb
index 6ece3dc..1e195e6 100755
--- a/lib/highline.rb
+++ b/lib/highline.rb
@@ -196,6 +196,7 @@ class HighLine
       q.responses[:not_valid]    = 'Please enter "yes" or "no".'
       q.responses[:ask_on_error] = :question
       q.character                = character
+      q.completion               = %w[yes no]
 
       yield q if block_given?
     end