diff --git a/lib/register/boot.rb b/lib/register/boot.rb
index b1547beb..bd43b14a 100644
--- a/lib/register/boot.rb
+++ b/lib/register/boot.rb
@@ -153,7 +153,7 @@ module Register
       # very fiddly chicken 'n egg problem. Functions need to be in the right order, and in fact we
       # have to define some dummies, just for the others to compile
       # TODO go through the virtual parfait layer and adjust function names to what they really are
-      space_class = space.get_class_by_name(:Space)
+      space_class = space.get_class
       space_class.instance_type.add_method Builtin::Space.send(:main, nil)
 
       obj = space.get_class_by_name(:Object)
diff --git a/lib/vm/parfait/type.rb b/lib/vm/parfait/type.rb
index e1104923..c1d3f320 100644
--- a/lib/vm/parfait/type.rb
+++ b/lib/vm/parfait/type.rb
@@ -139,7 +139,7 @@ module Parfait
     # index of the variable when using get_internal_word
     # (get_internal_word is 1 based and 1 is always the type)
     def variable_index( name )
-      has = names.index_of(name)
+      has = @names.index_of(name)
       return nil unless has
       raise "internal error #{name}:#{has}" if has < 1
       has