diff --git a/bodhi-messages/bodhi/messages/schemas/update.py b/bodhi-messages/bodhi/messages/schemas/update.py
index e56b6633b5..35f646f5ca 100644
--- a/bodhi-messages/bodhi/messages/schemas/update.py
+++ b/bodhi-messages/bodhi/messages/schemas/update.py
@@ -989,3 +989,35 @@ class UpdateReadyForTestingV2(UpdateReadyForTestingV1):
     body_schema['definitions']['build'] = BuildV1.schema()
     body_schema['properties']['update'] = UpdateV1.schema()
     body_schema['required'].append('update')
+
+    @property
+    def summary(self) -> str:
+        """
+        Return a short, human-readable representation of this message.
+
+        This should provide a short summary of the message, much like the subject line
+        of an email.
+
+        Returns:
+            A summary for this message.
+        """
+        return (
+            f"{self.body['update']['user']['name']}'s "
+            f"{truncate(' '.join([b['nvr'] for b in self.body['artifact']['builds']]))} "
+            f"bodhi update is ready for testing")
+
+    def __str__(self) -> str:
+        """
+        Return a human-readable representation of this message.
+
+        This should provide a detailed representation of the message, much like the body
+        of an email.
+
+        Returns:
+            A human readable representation of this message.
+        """
+        new_line = "\n"
+        return (
+            f"{self.body['update']['user']['name']}'s Bodhi update is ready for testing\n"
+            f"Builds:\n"
+            f"{new_line.join([b['nvr'] for b in self.body['artifact']['builds']])} ")
diff --git a/bodhi-messages/tests/test_update.py b/bodhi-messages/tests/test_update.py
index d000a0fb23..1363f8b2fe 100644
--- a/bodhi-messages/tests/test_update.py
+++ b/bodhi-messages/tests/test_update.py
@@ -248,11 +248,11 @@ def test_ready_for_testing_v2(self):
         expected = {
             "topic": "bodhi.update.status.testing.koji-build-group.build.complete",
             "summary": (
-                "BaseOS CI's libselinux-2.8-6.fc29.x86_64 libsepol-2.… bodhi update "
+                "plautrba's libselinux-2.8-6.fc29.x86_64 libsepol-2.… bodhi update "
                 "is ready for testing"
             ),
             "__str__": (
-                "BaseOS CI's Bodhi update is ready for testing\nBuilds:"
+                "plautrba's Bodhi update is ready for testing\nBuilds:"
                 "\nlibselinux-2.8-6.fc29.x86_64\nlibsepol-2.8-3.fc29.x86_64 "
             ),
             "app_icon": "https://apps.fedoraproject.org/img/icons/bodhi.png",
diff --git a/news/5415.bug b/news/5415.bug
new file mode 100644
index 0000000000..a018c3d027
--- /dev/null
+++ b/news/5415.bug
@@ -0,0 +1 @@
+Fixed wrong update attribution in ready for testing message string