diff --git a/lib/risc/interpreter.rb b/lib/risc/interpreter.rb
index 696c104c..c6a62e4b 100644
--- a/lib/risc/interpreter.rb
+++ b/lib/risc/interpreter.rb
@@ -141,6 +141,7 @@ module Risc
       else
         value = object.get_internal_word( index )
       end
+      log.debug "#{@instruction} == #{object}(#{object.class})   (#{value}|#{index})"
       set_register( @instruction.register , value )
       true
     end
@@ -153,7 +154,6 @@ module Risc
       else
         index = get_register(@instruction.index)
       end
-      puts "INDEX #{index} #{value}"
       object.set_internal_word( index , value )
       trigger(:object_changed, @instruction.array , index)
       true
diff --git a/lib/vool/statements/send_statement.rb b/lib/vool/statements/send_statement.rb
index 16d5dffe..69899d77 100644
--- a/lib/vool/statements/send_statement.rb
+++ b/lib/vool/statements/send_statement.rb
@@ -80,8 +80,8 @@ module Vool
       mom_receive = @receiver.slot_definition(in_method)
       arg_target = [:message , :next_message , :arguments]
       args = []
-      @arguments.each_with_index do |arg , index| # +1 because of type, + 1 beacuse 1-indexed
-        args << Mom::SlotLoad.new( arg_target + [index+1+1] , arg.slot_definition(in_method))
+      @arguments.each_with_index do |arg , index| # +1 because of type
+        args << Mom::SlotLoad.new( arg_target + [index + 1] , arg.slot_definition(in_method))
       end
       setup << Mom::ArgumentTransfer.new( mom_receive , args )
     end
diff --git a/test/mom/send/test_send_simple_args.rb b/test/mom/send/test_send_simple_args.rb
index dfae89b0..63a3d548 100644
--- a/test/mom/send/test_send_simple_args.rb
+++ b/test/mom/send/test_send_simple_args.rb
@@ -50,7 +50,7 @@ module Risc
       assert_equal RegToSlot , produced.next(base+3).class
       assert_equal :r1 , produced.next(base+3).register.symbol
       assert_equal :r3 , produced.next(base+3).array.symbol
-      assert_equal  2 , produced.next(base+3).index , "first arg must have index 1"
+      assert_equal  1 , produced.next(base+3).index , "first arg must have index 1"
     end
     def test_load_label
       produced = produce_body
diff --git a/test/parfait/test_word.rb b/test/parfait/test_word.rb
index dc8d085d..9f6531bc 100644
--- a/test/parfait/test_word.rb
+++ b/test/parfait/test_word.rb
@@ -110,5 +110,19 @@ module Parfait
       two = Parfait.new_word("one")
       assert one.compare(two)
     end
+    def test_first_char
+      one = Parfait.new_word("one")
+      one.set_char(0 , "T".ord)
+      assert_equal "Tne" , one.to_string
+    end
+    def test_sec_char
+      one = Parfait.new_word("one")
+      one.set_char(1 , "m".ord)
+      assert_equal "ome" , one.to_string
+    end
+    def test_more_char
+      one = Parfait.new_word("one")
+      assert_raises {one.set_char(3 , "s".ord)}
+    end
   end
 end
diff --git a/test/risc/interpreter/calling/test_get_byte.rb b/test/risc/interpreter/calling/test_get_byte.rb
index c79df22d..af7e4707 100644
--- a/test/risc/interpreter/calling/test_get_byte.rb
+++ b/test/risc/interpreter/calling/test_get_byte.rb
@@ -5,7 +5,7 @@ module Risc
     include Ticker
 
     def setup
-        @string_input = as_main("return 'Hello'.get_internal_byte(1)")
+        @string_input = as_main("return 'Hello'.get_internal_byte(0)")
       super
     end
     def test_chain
diff --git a/test/risc/interpreter/calling/test_set_byte.rb b/test/risc/interpreter/calling/test_set_byte.rb
index cabe1e0f..78f20e80 100644
--- a/test/risc/interpreter/calling/test_set_byte.rb
+++ b/test/risc/interpreter/calling/test_set_byte.rb
@@ -5,7 +5,7 @@ module Risc
     include Ticker
 
     def setup
-      @string_input = as_main("return 'Hello'.set_internal_byte(1,75)")
+      @string_input = as_main("return 'Hello'.set_internal_byte(0,75)")
       super
     end