diff --git a/actionpack/lib/abstract_controller/assigns.rb b/actionpack/lib/abstract_controller/assigns.rb
index 4f58cac91fbe0..21459c6d5121e 100644
--- a/actionpack/lib/abstract_controller/assigns.rb
+++ b/actionpack/lib/abstract_controller/assigns.rb
@@ -6,7 +6,7 @@ module Assigns
     def view_assigns
       hash = {}
       variables  = instance_variable_names
-      variables -= config.protected_instance_variables if config.respond_to?(:protected_instance_variables)
+      variables -= protected_instance_variables if respond_to?(:protected_instance_variables)
       variables.each { |name| hash[name] = instance_variable_get(name) }
       hash
     end
@@ -18,4 +18,4 @@ def _evaluate_assigns(object)
       view_assigns.each { |k,v| object.instance_variable_set(k, v) }
     end
   end
-end
+end
\ No newline at end of file
diff --git a/actionpack/lib/abstract_controller/rendering.rb b/actionpack/lib/abstract_controller/rendering.rb
index f1e6f7deb6770..d2db366140a2f 100644
--- a/actionpack/lib/abstract_controller/rendering.rb
+++ b/actionpack/lib/abstract_controller/rendering.rb
@@ -126,7 +126,7 @@ def _prefix
     def view_assigns
       hash = {}
       variables  = instance_variable_names
-      variables -= config.protected_instance_variables if config.respond_to?(:protected_instance_variables)
+      variables -= protected_instance_variables if respond_to?(:protected_instance_variables)
       variables.each { |name| hash[name.to_s[1..-1]] = instance_variable_get(name) }
       hash
     end
diff --git a/actionpack/lib/action_controller/deprecated/base.rb b/actionpack/lib/action_controller/deprecated/base.rb
index f91f637db8365..57203ce95f037 100644
--- a/actionpack/lib/action_controller/deprecated/base.rb
+++ b/actionpack/lib/action_controller/deprecated/base.rb
@@ -154,7 +154,6 @@ def verify(*args)
     deprecated_config_accessor :helpers_path
     deprecated_config_accessor :javascripts_dir
     deprecated_config_accessor :page_cache_directory
-    deprecated_config_accessor :protected_instance_variables
     deprecated_config_accessor :relative_url_root, "relative_url_root is ineffective. Please stop using it"
     deprecated_config_accessor :stylesheets_dir