diff --git a/actionpack/lib/action_controller/metal/strong_parameters.rb b/actionpack/lib/action_controller/metal/strong_parameters.rb
index 7d5781b23a0ce13c560fcd0bc1b3af3619406717..9f78e679c681e6b00bb5b62e54780ac3fb9acb11 100644
--- a/actionpack/lib/action_controller/metal/strong_parameters.rb
+++ b/actionpack/lib/action_controller/metal/strong_parameters.rb
@@ -196,7 +196,7 @@ def require(key)
     def permit(*filters)
       params = self.class.new
 
-      filters.each do |filter|
+      filters.flatten.each do |filter|
         case filter
         when Symbol, String then
           if has_key?(filter)
diff --git a/actionpack/test/controller/parameters/parameters_permit_test.rb b/actionpack/test/controller/parameters/parameters_permit_test.rb
index ad970f0a9a0dfaa5077f432565aba2d3e257f88b..a13ffab9c045f9b4f22c4c972785ac4251f21b3b 100644
--- a/actionpack/test/controller/parameters/parameters_permit_test.rb
+++ b/actionpack/test/controller/parameters/parameters_permit_test.rb
@@ -1,4 +1,5 @@
 require 'abstract_unit'
+require 'debugger'
 require 'action_controller/metal/strong_parameters'
 
 class ParametersPermitTest < ActiveSupport::TestCase
@@ -77,4 +78,8 @@ class ParametersPermitTest < ActiveSupport::TestCase
       ActionController::Parameters.permit_all_parameters = false
     end
   end
+  
+  test "permitting parameters as an array" do
+    assert_equal "32", @params[:person].permit([ :age ])[:age]
+  end
 end