diff --git a/src/vm.py b/src/vm.py
index 357eea2..ec1cf9c 100644
--- a/src/vm.py
+++ b/src/vm.py
@@ -4,10 +4,12 @@ from typing import ClassVar, Callable
 from ctypes import c_uint32, c_int32
 import struct
 from optable import OPCODES, OpcodeDescription, OpL, OpA, OpF, OpD
-from enum import IntFlag, auto
+from enum import IntFlag, Enum, auto
 
 class VMFlags(IntFlag):
-    AFTER_BRANCH = auto()
+    # if last instruction is big, then you should
+    # skip more memory on step
+    EXPANDED_INSTR = auto()
 
 class Condition:
     def __init__(self, cond: int):