diff --git a/activesupport/lib/active_support/core_ext/enumerable.rb b/activesupport/lib/active_support/core_ext/enumerable.rb
index 678c4e00982a5..d4fdf4e0208d9 100644
--- a/activesupport/lib/active_support/core_ext/enumerable.rb
+++ b/activesupport/lib/active_support/core_ext/enumerable.rb
@@ -93,8 +93,8 @@ def index_with(default = (no_default = true))
   def many?
     cnt = 0
     if block_given?
-      any? do |element, *args|
-        cnt += 1 if yield element, *args
+      any? do |*args|
+        cnt += 1 if yield(*args)
         cnt > 1
       end
     else
diff --git a/activesupport/test/core_ext/enumerable_test.rb b/activesupport/test/core_ext/enumerable_test.rb
index ebff4ac25d655..823d906ee4f19 100644
--- a/activesupport/test/core_ext/enumerable_test.rb
+++ b/activesupport/test/core_ext/enumerable_test.rb
@@ -278,6 +278,7 @@ def test_many
     assert_equal false, GenericEnumerable.new([ 1, 2 ]).many? { |x| x > 1 }
     assert_equal true,  GenericEnumerable.new([ 1, 2, 2 ]).many? { |x| x > 1 }
     assert_equal true,  GenericEnumerable.new([ 1, 2, 3]).each_with_index.many? { |x, i| x == i + 1 }
+    assert_equal true,  GenericEnumerable.new([ [1, 2], [3, 4] ]).many? { |x| x.sum > 1 }
   end
 
   def test_many_iterates_only_on_what_is_needed