1 files changed, 1 insertions, 15 deletions
diff --git a/mrbgems/mruby-catch/mrblib/catch.rb b/mrbgems/mruby-catch/mrblib/catch.rb
index 68b165c8d..8e5f59023 100644
--- a/mrbgems/mruby-catch/mrblib/catch.rb
+++ b/mrbgems/mruby-catch/mrblib/catch.rb
@@ -1,4 +1,4 @@
-class ThrowCatchJump < Exception
+class UncaughtThrowError < ArgumentError
   attr_reader :_tag, :_val
   def initialize(tag, val)
     @_tag = tag
@@ -6,17 +6,3 @@ class ThrowCatchJump < Exception
     super("uncaught throw #{tag.inspect}")
   end
 end
-
-module Kernel
-  def catch(tag=Object.new, &block)
-    block.call(tag)
-  rescue ThrowCatchJump => e
-    unless e._tag.equal?(tag)
-      raise e
-    end
-    return e._val
-  end
-  def throw(tag, val=nil)
-    raise ThrowCatchJump.new(tag, val)
-  end
-end