1 files changed, 1 insertions, 1 deletions
diff --git a/lib/net/smtp.rb b/lib/net/smtp.rb
index 4ed7e746d9..fdc911b82e 100644
--- a/lib/net/smtp.rb
+++ b/lib/net/smtp.rb
@@ -942,7 +942,7 @@ module Net
     end
 
     def critical
-      return '200 dummy reply code' if @error_occurred
+      return Response.parse('200 dummy reply code') if @error_occurred
       begin
         return yield()
       rescue Exception