diff --git a/typora.py b/typora.py
index c90682e..5d777e6 100644
--- a/typora.py
+++ b/typora.py
@@ -29,7 +29,7 @@ else:
     log.add(sys.stderr, level="INFO")
 
 AES_KEY = struct.pack("<4Q", *[0xEE22F61DC0C36FD0, 0xCBF8FC4A0D06F3AB, 0xE2F507436D26D722, 0x5AE32AFDEC7872F0])
-AES_IV = struct.pack("<4L", *[0x33706964, 0x5387CDD2, 0xD05F336D, 0x53F82468])
+AES_IV = struct.pack("<4L", *[0x33706964, 0x5387CD15, 0xD05F336D, 0x53F82468])
 
 
 def _mkDir(_path):