1 files changed, 1 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/instance_variables.rb b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
index 755e1c6b16..593a7a4940 100644
--- a/activesupport/lib/active_support/core_ext/object/instance_variables.rb
+++ b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
@@ -23,6 +23,6 @@ class Object
   #
   #   C.new(0, 1).instance_variable_names # => ["@y", "@x"]
   def instance_variable_names
-    instance_variables.map { |var| var.to_s }
+    instance_variables.map(&:to_s)
   end
 end