diff --git a/mockfirestore/client.py b/mockfirestore/client.py
index e39d82e..4bd7c67 100644
--- a/mockfirestore/client.py
+++ b/mockfirestore/client.py
@@ -60,6 +60,8 @@ def transaction(self, **kwargs) -> Transaction:
         return Transaction(self, **kwargs)
 
     def batch(self) -> Transaction:
-        return Transaction(self)
+        batch = Transaction(self)
+        batch._begin()
+        return batch