diff --git a/sample/cbreak.rb b/sample/cbreak.rb
index c2246846b6..7f1385cce3 100644
--- a/sample/cbreak.rb
+++ b/sample/cbreak.rb
@@ -30,7 +30,7 @@ end
 cbreak();
 
 print("this is no-echo line: ");
-readline().print
+readline().display
 cooked();
 print("this is echo line: ");
 readline()