diff --git a/zerver/fixtures/bugdown-data.json b/zerver/fixtures/bugdown-data.json
index 24e568f8590af7..62afc4b2e06d18 100644
--- a/zerver/fixtures/bugdown-data.json
+++ b/zerver/fixtures/bugdown-data.json
@@ -246,6 +246,18 @@
       "expected_output": "<p><code>!modal_link(#settings, Settings page)</code></p>",
       "bugdown_matches_marked": true
     },
+    {
+      "name": "avatar",
+      "input": "!avatar(username@example.com)",
+      "expected_output": "<p><img alt=\"username@example.com\" class=\"message_body_gravatar\" src=\"/avatar/username@example.com?s=30\" title=\"username@example.com\"></p>",
+      "bugdown_matches_marked": false
+    },
+    {
+      "name": "gravatar",
+      "input": "!gravatar(username@example.com)",
+      "expected_output": "<p><img alt=\"username@example.com\" class=\"message_body_gravatar\" src=\"/avatar/username@example.com?s=30\" title=\"username@example.com\"></p>",
+      "bugdown_matches_marked": false
+    },
     {
       "name": "avatar_escaped",
       "input": "`!avatar(username@example.com)`",