diff --git a/lib/debug/console.rb b/lib/debug/console.rb
index 53545e5e9..b228086d9 100644
--- a/lib/debug/console.rb
+++ b/lib/debug/console.rb
@@ -143,7 +143,7 @@ def history
       rescue LoadError
         def readline prompt
           print prompt
-          gets
+          $stdin.gets
         end
 
         def history