diff --git a/state.go b/state.go
index 808ef9b..9c024e2 100644
--- a/state.go
+++ b/state.go
@@ -19,8 +19,14 @@ type State struct {
 	stack            []*StackFrame
 }
 
-func NewState(byteCodes [][]byte) (*State, error) {
-	state := &State{}
+func NewState(functions [][]*Instruction) (*State, error) {
+	return &State{
+		functions: functions,
+	}, nil
+}
+
+func NewStateFromByteCode(byteCodes [][]byte) (*State, error) {
+	functions := [][]*Instruction{}
 
 	for i, byteCode := range byteCodes {
 		instrs, err := NewInstructionsFromByteCode(byteCode)
@@ -28,10 +34,10 @@ func NewState(byteCodes [][]byte) (*State, error) {
 			return nil, errors.Wrapf(err, "At function index %d", i)
 		}
 
-		state.functions = append(state.functions, instrs)
+		functions = append(functions, instrs)
 	}
 
-	return state, nil
+	return NewState(functions)
 }
 
 func (state *State) Execute() {
diff --git a/state_test.go b/state_test.go
index f4acbf6..9ff064a 100644
--- a/state_test.go
+++ b/state_test.go
@@ -30,7 +30,7 @@ func TestFirst(t *testing.T) {
 		functionByteCode = append(functionByteCode, byteCode)
 	}
 
-	state, err := NewState(functionByteCode)
+	state, err := NewStateFromByteCode(functionByteCode)
 	if err != nil {
 		t.Fatal(err)
 	}