diff --git a/ethchain/closure.go b/ethchain/closure.go
index 59194e4e8..e65cfd252 100644
--- a/ethchain/closure.go
+++ b/ethchain/closure.go
@@ -72,7 +72,7 @@ func (c *Closure) Address() []byte {
 	return c.object.Address()
 }
 
-type DebugHook func(step int, op OpCode, mem *Memory, stack *Stack)
+type DebugHook func(step int, op OpCode, mem *Memory, stack *Stack, stateObject *StateObject)
 
 func (c *Closure) Call(vm *Vm, args []byte, hook DebugHook) ([]byte, error) {
 	c.Args = args
diff --git a/ethchain/state.go b/ethchain/state.go
index e209e0e2f..5af748e00 100644
--- a/ethchain/state.go
+++ b/ethchain/state.go
@@ -49,6 +49,11 @@ func (s *State) Purge() int {
 	return s.trie.NewIterator().Purge()
 }
 
+func (s *State) EachStorage(cb ethutil.EachCallback) {
+	it := s.trie.NewIterator()
+	it.Each(cb)
+}
+
 func (s *State) GetStateObject(addr []byte) *StateObject {
 	data := s.trie.Get(string(addr))
 	if data == "" {
diff --git a/ethchain/vm.go b/ethchain/vm.go
index e025920f3..0d9e8599e 100644
--- a/ethchain/vm.go
+++ b/ethchain/vm.go
@@ -543,7 +543,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 		pc.Add(pc, ethutil.Big1)
 
 		if hook != nil {
-			hook(step-1, op, mem, stack)
+			hook(step-1, op, mem, stack, closure.Object())
 		}
 	}
 }