diff --git a/lib/parfait/block.rb b/lib/parfait/block.rb
index 13412e7e..4c2a3a2d 100644
--- a/lib/parfait/block.rb
+++ b/lib/parfait/block.rb
@@ -18,6 +18,5 @@ module Parfait
     def inspect
       "#{@self_type.object_class.name}(#{arguments_type.inspect})"
     end
-
   end
 end
diff --git a/lib/risc/interpreter.rb b/lib/risc/interpreter.rb
index 861d7ca2..4891136b 100644
--- a/lib/risc/interpreter.rb
+++ b/lib/risc/interpreter.rb
@@ -110,7 +110,10 @@ module Risc
     # Instruction interpretation starts here
     def execute_DynamicJump
       method =  get_register(@instruction.register)
-      pos = Position.get(method.binary).at + Parfait::BinaryCode.byte_offset
+      pos = Position.get(method.binary)
+      log.debug "Jump to binary at: #{pos} #{method.name}:#{method.binary.class}"
+      raise "Invalid position for #{method.name}" unless pos.valid?
+      pos = pos + Parfait::BinaryCode.byte_offset
       set_pc( pos )
       false
     end
diff --git a/test/risc/interpreter/calling/test_minus.rb b/test/risc/interpreter/calling/test_minus.rb
index a8496bd1..2866105f 100644
--- a/test/risc/interpreter/calling/test_minus.rb
+++ b/test/risc/interpreter/calling/test_minus.rb
@@ -45,7 +45,7 @@ module Risc
       ret = main_ticks(60)
       assert_equal FunctionReturn ,  ret.class
       assert_equal :r1 ,  ret.register.symbol
-      assert_equal 23392 ,  @interpreter.get_register(ret.register)
+      assert_equal 24160 ,  @interpreter.get_register(ret.register)
     end
     def test_sys
       sys = main_ticks(65)
diff --git a/test/risc/test_interpreter.rb b/test/risc/test_interpreter.rb
index 27ed5177..44fa80a6 100644
--- a/test/risc/test_interpreter.rb
+++ b/test/risc/test_interpreter.rb
@@ -54,7 +54,7 @@ module Risc
     end
     def test_pc1
       @interpreter.tick
-      assert_equal 22968 , @interpreter.pc
+      assert_equal 23736 , @interpreter.pc
     end
     def test_tick2
       @interpreter.tick
@@ -68,7 +68,7 @@ module Risc
     def test_pc2
       @interpreter.tick
       @interpreter.tick
-      assert_equal 22972 , @interpreter.pc
+      assert_equal 23740 , @interpreter.pc
     end
     def test_tick_14_jump
       14.times {@interpreter.tick}
diff --git a/test/risc/test_linker.rb b/test/risc/test_linker.rb
index 464de3bf..c729dc7b 100644
--- a/test/risc/test_linker.rb
+++ b/test/risc/test_linker.rb
@@ -25,7 +25,7 @@ module Risc
       assert_equal 0 ,  Position.get(@linker.cpu_init).at
     end
     def test_cpu_at
-      assert_equal "0x686c" ,  Position.get(@linker.cpu_init.first).to_s
+      assert_equal "0x6b6c" ,  Position.get(@linker.cpu_init.first).to_s
     end
     def test_cpu_label
       assert_equal Position ,  Position.get(@linker.cpu_init.first).class
diff --git a/test/risc/test_method_compiler.rb b/test/risc/test_method_compiler.rb
index 069ac65e..fb83fcfa 100644
--- a/test/risc/test_method_compiler.rb
+++ b/test/risc/test_method_compiler.rb
@@ -49,16 +49,6 @@ module Risc
       assert_equal Vool::MethodStatement , clazz.body.first.class
     end
 
-    def test_method_statement_has_class
-      vool = in_test_vool("def meth; @ivar = 5;end")
-      assert vool.body.first.clazz
-    end
-
-    def test_parfait_class_creation
-      vool = in_test_vool("def meth; @ivar = 5;end")
-      assert_equal Parfait::Class , vool.body.first.clazz.class
-    end
-
     def test_callable_method_instance_type
       in_test_vool("def meth; @ivar = 5; @ibar = 4;end")
       test = Parfait.object_space.get_class_by_name(:Test)