diff --git a/lib/register/instructions/register_transfer.rb b/lib/register/instructions/register_transfer.rb
index 440b0fd7..f54f87f9 100644
--- a/lib/register/instructions/register_transfer.rb
+++ b/lib/register/instructions/register_transfer.rb
@@ -13,7 +13,7 @@ module Register
   class RegisterTransfer < Instruction
     # initialize with from and to registers.
     # First argument from
-    # second arguemnt to
+    # second argument to
     #
     # Note: this may be reversed from some assembler notations (also arm)
     def initialize source , from , to
diff --git a/test/compiler/compiler_helper.rb b/test/compiler/compiler_helper.rb
index b553f480..b3cbbcb6 100644
--- a/test/compiler/compiler_helper.rb
+++ b/test/compiler/compiler_helper.rb
@@ -4,11 +4,14 @@ require 'parslet/convenience'
 module CompilerHelper
 
   Phisol::Compiler.class_eval do
-    def set_main
+    def set_main main
       @clazz = Virtual.machine.space.get_class_by_name :Object
-      @method = Virtual.machine.space.get_main
+      @method = main
     end
   end
+  def set_main compiler
+    compiler.set_main Virtual.machine.space.get_main
+  end
   def check
     machine = Virtual.machine
     machine.boot unless machine.booted
@@ -18,7 +21,7 @@ module CompilerHelper
     parts = Parser::Transform.new.apply(syntax)
     #puts parts.inspect
     compiler = Phisol::Compiler.new
-    compiler.set_main
+    set_main(compiler)
     produced = compiler.process( parts )
     assert @output , "No output given"
     assert_equal  produced.class, @output , "Wrong class"
diff --git a/test/compiler/test_all.rb b/test/compiler/test_all.rb
index d0b1bfcc..cfdd1543 100644
--- a/test/compiler/test_all.rb
+++ b/test/compiler/test_all.rb
@@ -1,3 +1,4 @@
 require_relative "test_basic"
+require_relative "test_call"
 require_relative "test_compiler"
 require_relative "test_field_access"
diff --git a/test/elf/test_hello.rb b/test/elf/test_hello.rb
index 109517e0..35f0adbf 100644
--- a/test/elf/test_hello.rb
+++ b/test/elf/test_hello.rb
@@ -1,4 +1,4 @@
-require_relative "compiler_helper"
+require_relative "../helper"
 
 class HelloTest < MiniTest::Test