diff --git a/google/cloud/firestore_v1/transaction.py b/google/cloud/firestore_v1/transaction.py
index 9d4068c75..04485a84c 100644
--- a/google/cloud/firestore_v1/transaction.py
+++ b/google/cloud/firestore_v1/transaction.py
@@ -213,7 +213,7 @@ def get_all(self, references):
             .DocumentSnapshot: The next document snapshot that fulfills the
             query, or :data:`None` if the document does not exist.
         """
-        return self._client.get_all(references, transaction=self._id)
+        return self._client.get_all(references, transaction=self)
 
     def get(self, ref_or_query):
         """
@@ -225,9 +225,9 @@ def get(self, ref_or_query):
             query, or :data:`None` if the document does not exist.
         """
         if isinstance(ref_or_query, DocumentReference):
-            return self._client.get_all([ref_or_query], transaction=self._id)
+            return self._client.get_all([ref_or_query], transaction=self)
         elif isinstance(ref_or_query, Query):
-            return ref_or_query.stream(transaction=self._id)
+            return ref_or_query.stream(transaction=self)
         else:
             raise ValueError(
                 'Value for argument "ref_or_query" must be a DocumentReference or a Query.'
diff --git a/tests/unit/v1/test_transaction.py b/tests/unit/v1/test_transaction.py
index 8cae24a23..da3c2d0b0 100644
--- a/tests/unit/v1/test_transaction.py
+++ b/tests/unit/v1/test_transaction.py
@@ -333,7 +333,7 @@ def test_get_all(self):
         transaction = self._make_one(client)
         ref1, ref2 = mock.Mock(), mock.Mock()
         result = transaction.get_all([ref1, ref2])
-        client.get_all.assert_called_once_with([ref1, ref2], transaction=transaction.id)
+        client.get_all.assert_called_once_with([ref1, ref2], transaction=transaction)
         self.assertIs(result, client.get_all.return_value)
 
     def test_get_document_ref(self):
@@ -343,7 +343,7 @@ def test_get_document_ref(self):
         transaction = self._make_one(client)
         ref = DocumentReference("documents", "doc-id")
         result = transaction.get(ref)
-        client.get_all.assert_called_once_with([ref], transaction=transaction.id)
+        client.get_all.assert_called_once_with([ref], transaction=transaction)
         self.assertIs(result, client.get_all.return_value)
 
     def test_get_w_query(self):
@@ -354,7 +354,7 @@ def test_get_w_query(self):
         query = Query(parent=mock.Mock(spec=[]))
         query.stream = mock.MagicMock()
         result = transaction.get(query)
-        query.stream.assert_called_once_with(transaction=transaction.id)
+        query.stream.assert_called_once_with(transaction=transaction)
         self.assertIs(result, query.stream.return_value)
 
     def test_get_failure(self):