diff --git a/DeDRM_plugin/kgenpids.py b/DeDRM_plugin/kgenpids.py
index 103b77b..31cb6a5 100644
--- a/DeDRM_plugin/kgenpids.py
+++ b/DeDRM_plugin/kgenpids.py
@@ -209,7 +209,7 @@ def getK4Pids(rec209, token, kindleDatabase):
         kindleAccountToken = bytearray.fromhex((kindleDatabase[1])['kindle.account.tokens'])
 
     except KeyError:
-        kindleAccountToken=""
+        kindleAccountToken = b''
         pass
 
     try: