1 files changed, 5 insertions, 3 deletions
diff --git a/mrbgems/mruby-array-ext/mrblib/array.rb b/mrbgems/mruby-array-ext/mrblib/array.rb
index 6096696cb..1cd1eb643 100644
--- a/mrbgems/mruby-array-ext/mrblib/array.rb
+++ b/mrbgems/mruby-array-ext/mrblib/array.rb
@@ -266,7 +266,6 @@ class Array
     self
   end
 
-  NONE=Object.new
   ##
   #  call-seq:
   #     ary.fetch(index)                    -> obj
@@ -904,8 +903,8 @@ class Array
     column_count = nil
     self.each do |row|
       raise TypeError unless row.is_a?(Array)
-      column_count ||= row.count
-      raise IndexError, 'element size differs' unless column_count == row.count
+      column_count ||= row.size
+      raise IndexError, 'element size differs' unless column_count == row.size
     end
 
     Array.new(column_count) do |column_index|
@@ -937,4 +936,7 @@ class Array
     end
     h
   end
+
+  alias append push
+  alias prepend unshift
 end