diff --git a/libraries/microsoft-agents-activity/microsoft_agents/activity/entity/ai_entity.py b/libraries/microsoft-agents-activity/microsoft_agents/activity/entity/ai_entity.py
index 68f1a6bf..dd5368be 100644
--- a/libraries/microsoft-agents-activity/microsoft_agents/activity/entity/ai_entity.py
+++ b/libraries/microsoft-agents-activity/microsoft_agents/activity/entity/ai_entity.py
@@ -11,7 +11,12 @@
 
 
 class ClientCitationIconName(str, Enum):
-    """Enumeration of supported citation icon names."""
+    """Supported citation icon names for ``citation.appearance.image.name``.
+
+    The values mirror the predefined icon names documented for Teams bot
+    messages with AI-generated content. See "Add citations":
+    https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/bot-messages-ai-generated-content#add-citations
+    """
 
     MICROSOFT_WORD = "Microsoft Word"
     MICROSOFT_EXCEL = "Microsoft Excel"
@@ -21,12 +26,12 @@ class ClientCitationIconName(str, Enum):
     MICROSOFT_VISIO = "Microsoft Visio"
     MICROSOFT_LOOP = "Microsoft Loop"
     MICROSOFT_WHITEBOARD = "Microsoft Whiteboard"
+    SOURCE_CODE = "Source Code"
+    SKETCH = "Sketch"
     ADOBE_ILLUSTRATOR = "Adobe Illustrator"
     ADOBE_PHOTOSHOP = "Adobe Photoshop"
     ADOBE_INDESIGN = "Adobe InDesign"
     ADOBE_FLASH = "Adobe Flash"
-    SKETCH = "Sketch"
-    SOURCE_CODE = "Source Code"
     IMAGE = "Image"
     GIF = "GIF"
     VIDEO = "Video"
diff --git a/tests/activity/entity/test_serialization.py b/tests/activity/entity/test_serialization.py
index 3f702f79..99ea7ac6 100644
--- a/tests/activity/entity/test_serialization.py
+++ b/tests/activity/entity/test_serialization.py
@@ -4,6 +4,7 @@
     AIEntity,
     ClientCitation,
     ClientCitationAppearance,
+    ClientCitationIconName,
     SensitivityPattern,
     SensitivityUsageInfo,
 )
@@ -58,3 +59,38 @@ def test_schema_mixin_at_context_serialization():
 
     assert "at_type" not in data
     assert "at_context" not in data
+
+
+def test_client_citation_icon_name_matches_teams_docs():
+    """The icon names must match the predefined values documented for
+    citation.appearance.image.name in the Teams "Add citations" article:
+    https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/bot-messages-ai-generated-content#add-citations
+    """
+    expected_values = [
+        "Microsoft Word",
+        "Microsoft Excel",
+        "Microsoft PowerPoint",
+        "Microsoft OneNote",
+        "Microsoft SharePoint",
+        "Microsoft Visio",
+        "Microsoft Loop",
+        "Microsoft Whiteboard",
+        "Source Code",
+        "Sketch",
+        "Adobe Illustrator",
+        "Adobe Photoshop",
+        "Adobe InDesign",
+        "Adobe Flash",
+        "Image",
+        "GIF",
+        "Video",
+        "Sound",
+        "ZIP",
+        "Text",
+        "PDF",
+    ]
+
+    actual_values = [member.value for member in ClientCitationIconName]
+
+    assert set(actual_values) == set(expected_values)
+    assert actual_values == expected_values