diff --git a/lib/parfait/module.rb b/lib/parfait/module.rb
index 902acbb6..8949fd0c 100644
--- a/lib/parfait/module.rb
+++ b/lib/parfait/module.rb
@@ -43,7 +43,7 @@ module Parfait
       found = get_instance_method( method.name )
       if found
         @instance_methods.delete(found)
-        raise "existed in #{self.name} #{Sof::Writer.write found.info.blocks}"
+        raise "existed in #{self.name} #{Sof.write found.info.blocks}"
       end
       @instance_methods.push method
       #puts "#{self.name} add #{method.name}"
diff --git a/lib/register/assembler.rb b/lib/register/assembler.rb
index 219e96e7..46afdeb6 100644
--- a/lib/register/assembler.rb
+++ b/lib/register/assembler.rb
@@ -100,8 +100,8 @@ module Register
           begin
           code.assemble( stream )
         rescue => e
-            puts "Method error #{method.name}\n#{Sof::Writer.write(method.info.blocks).to_s[0...2000]}"
-            puts Sof::Writer.write(code)
+            puts "Method error #{method.name}\n#{Sof.write(method.info.blocks).to_s[0...2000]}"
+            puts Sof.write(code)
             raise e
           end
         end
diff --git a/lib/virtual/block.rb b/lib/virtual/block.rb
index b0400200..69e42c80 100644
--- a/lib/virtual/block.rb
+++ b/lib/virtual/block.rb
@@ -72,7 +72,7 @@ module Virtual
     end
 
     def to_s
-      Sof::Writer.write(self)
+      Sof.write(self)
     end
 
     private
diff --git a/lib/virtual/instruction.rb b/lib/virtual/instruction.rb
index 982487ba..ae13696a 100644
--- a/lib/virtual/instruction.rb
+++ b/lib/virtual/instruction.rb
@@ -10,7 +10,7 @@ module Virtual
 
   class Instruction
     def to_s
-      Sof::Writer.write(self)
+      Sof.write(self)
     end
   end
 
diff --git a/lib/virtual/parfait_adapter.rb b/lib/virtual/parfait_adapter.rb
index 642d572f..24e87091 100644
--- a/lib/virtual/parfait_adapter.rb
+++ b/lib/virtual/parfait_adapter.rb
@@ -126,7 +126,7 @@ module Parfait
     end
 
     def to_s
-      Sof::Writer.write(self)
+      Sof.write(self)
     end
     def inspect
       to_s
diff --git a/test/virtual/test_hello.rb b/test/virtual/test_hello.rb
index 65823994..a04cb42a 100644
--- a/test/virtual/test_hello.rb
+++ b/test/virtual/test_hello.rb
@@ -7,7 +7,7 @@ class HelloTest < MiniTest::Test
     machine = Virtual::Machine.boot
     expressions = machine.compile_main @string_input
     machine.run_before "Register::CallImplementation"
-    puts Sof::Writer.write(machine.space)
+    puts Sof.write(machine.space)
     machine.run_after "Register::CallImplementation"
 
 
diff --git a/test/virtual/virtual_helper.rb b/test/virtual/virtual_helper.rb
index f8016083..36778e47 100644
--- a/test/virtual/virtual_helper.rb
+++ b/test/virtual/virtual_helper.rb
@@ -21,7 +21,7 @@ module VirtualHelper
       # with the class comes superclass and all methods
       expressions.first.type.instance_variable_set :@of_class , nil
     end
-    is = Sof::Writer.write(expressions)
+    is = Sof.write(expressions)
     #puts is
     is.gsub!("\n" , "*^*")
     assert_equal is , @output