diff --git a/zerver/lib/slack_data_to_zulip_data.py b/zerver/lib/slack_data_to_zulip_data.py
index 918c9057ec..3eb8cd4c13 100755
--- a/zerver/lib/slack_data_to_zulip_data.py
+++ b/zerver/lib/slack_data_to_zulip_data.py
@@ -328,8 +328,7 @@ def channels_to_zerver_stream(slack_data_dir: str, realm_id: int, added_users: A
         # map Slack's topic and purpose content into Zulip's stream description.
         # WARN This mapping is lossy since the topic.creator, topic.last_set,
         # purpose.creator, purpose.last_set fields are not preserved.
-        description = "topic: {}\npurpose: {}".format(channel["topic"]["value"],
-                                                      channel["purpose"]["value"])
+        description = channel["purpose"]["value"]
         stream_id = stream_id_list[stream_id_count]
         recipient_id = recipient_id_list[recipient_id_count]
 
diff --git a/zerver/tests/test_slack_importer.py b/zerver/tests/test_slack_importer.py
index 4fe84d350d..b87674b403 100644
--- a/zerver/tests/test_slack_importer.py
+++ b/zerver/tests/test_slack_importer.py
@@ -312,8 +312,7 @@ class SlackImporter(ZulipTestCase):
         # stream mapping
         self.assertEqual(zerver_stream[0]['name'], channel_data[0]['name'])
         self.assertEqual(zerver_stream[0]['deactivated'], channel_data[0]['is_archived'])
-        self.assertEqual(zerver_stream[0]['description'],
-                         "topic: {}\npurpose: {}".format('random', 'no purpose'))
+        self.assertEqual(zerver_stream[0]['description'], 'no purpose')
         self.assertEqual(zerver_stream[0]['invite_only'], False)
         self.assertEqual(zerver_stream[0]['realm'], realm_id)
         self.assertEqual(zerver_stream[2]['id'],