diff --git a/zerver/webhooks/github/tests.py b/zerver/webhooks/github/tests.py
index 5aae92775b..b7a7aa879c 100644
--- a/zerver/webhooks/github/tests.py
+++ b/zerver/webhooks/github/tests.py
@@ -143,14 +143,14 @@ class GitHubWebhookTest(WebhookTestCase):
         self.check_webhook("issues", expected_topic, expected_message)
 
     def test_issue_assigned(self) -> None:
-        expected_message = "sbansal1999 assigned [issue #7](https://github.com/sbansal1999/testing-gh/issues/7) (assigned to sbansal1999):\n\n~~~ quote\nIDK how this works, lets see if it can be fixed or not.\n~~~"
+        expected_message = "sbansal1999 assigned [issue #7](https://github.com/sbansal1999/testing-gh/issues/7) (assigned to sbansal1999)."
         expected_topic = "testing-gh / issue #7 Sample Issue testing something"
         self.check_webhook("issues__assigned", expected_topic, expected_message)
 
     def test_issue_assigned_with_custom_topic_in_url(self) -> None:
         self.url = self.build_webhook_url(topic="notifications")
         expected_topic = "notifications"
-        expected_message = "sbansal1999 assigned [issue #7 Sample Issue testing something](https://github.com/sbansal1999/testing-gh/issues/7) (assigned to sbansal1999):\n\n~~~ quote\nIDK how this works, lets see if it can be fixed or not.\n~~~"
+        expected_message = "sbansal1999 assigned [issue #7 Sample Issue testing something](https://github.com/sbansal1999/testing-gh/issues/7) (assigned to sbansal1999)."
         self.check_webhook("issues__assigned", expected_topic, expected_message)
 
     def test_issue_unassigned(self) -> None:
diff --git a/zerver/webhooks/github/view.py b/zerver/webhooks/github/view.py
index 8b414adcac..fc909f0ca1 100644
--- a/zerver/webhooks/github/view.py
+++ b/zerver/webhooks/github/view.py
@@ -165,7 +165,7 @@ def get_issue_body(helper: Helper) -> str:
         action=action,
         url=issue["html_url"].tame(check_string),
         number=issue["number"].tame(check_int),
-        message=issue["body"].tame(check_none_or(check_string)),
+        message=None if action == "assigned" else issue["body"].tame(check_none_or(check_string)),
         assignee=assignee["login"].tame(check_string) if assignee else None,
         title=issue["title"].tame(check_string) if include_title else None,
     )