diff --git a/gnosis/__init__.py b/gnosis/__init__.py
index 645bbcec6..5a6ff998c 100644
--- a/gnosis/__init__.py
+++ b/gnosis/__init__.py
@@ -1 +1 @@
-VERSION = "6.0.0b32"
+VERSION = "6.0.0b33"
diff --git a/gnosis/eth/account_abstraction/user_operation.py b/gnosis/eth/account_abstraction/user_operation.py
index 11bd3c862..9e31b344d 100644
--- a/gnosis/eth/account_abstraction/user_operation.py
+++ b/gnosis/eth/account_abstraction/user_operation.py
@@ -115,8 +115,9 @@ def paymaster(self) -> Optional[ChecksumAddress]:
 
     @cached_property
     def paymaster_data(self) -> Optional[bytes]:
-        result = self.paymaster_and_data[:20]
-        return result if result else None
+        if self.paymaster_and_data:
+            return self.paymaster_and_data[20:]
+        return None
 
     def calculate_user_operation_hash(self, chain_id: int) -> bytes:
         hash_init_code = fast_keccak(self.init_code)