diff --git a/lib/amazing_print/formatters/hash_formatter.rb b/lib/amazing_print/formatters/hash_formatter.rb
index fd27c54..7a5ff91 100644
--- a/lib/amazing_print/formatters/hash_formatter.rb
+++ b/lib/amazing_print/formatters/hash_formatter.rb
@@ -107,12 +107,10 @@ def pre_ruby19_syntax(key, value, width)
         "#{align(awesome_key, width)}#{colorize(' => ', :hash)}#{inspector.awesome(value)}"
       end
 
-      def plain_single_line
+      def plain_single_line(&block)
         plain = options[:plain]
         options[:plain] = true
-        single_line do
-          yield
-        end
+        single_line(&block)
       ensure
         options[:plain] = plain
       end