diff --git a/components/chat_data/chat_data.app.mjs b/components/chat_data/chat_data.app.mjs
index f983b665b8468..3410dd8bcad03 100644
--- a/components/chat_data/chat_data.app.mjs
+++ b/components/chat_data/chat_data.app.mjs
@@ -49,7 +49,6 @@ export default {
       type: "string",
       label: "Model",
       description: "The chatbot defaults to `custom-data-upload` if the model parameter is not provided",
-      optional: true,
       options: constants.CHATBOT_MODELS,
     },
   },
diff --git a/components/chat_data/common/constants.mjs b/components/chat_data/common/constants.mjs
index 86cbdd41950b3..87f8af5c966a2 100644
--- a/components/chat_data/common/constants.mjs
+++ b/components/chat_data/common/constants.mjs
@@ -1,8 +1,8 @@
-export default {
-  CHATBOT_MODELS: [
+export default {
+  CHATBOT_MODELS: [
     "custom-data-upload",
     "medical-chat-human",
     "medical-chat-vet",
-    "custom-model",
-  ],
+    "custom-model",
+  ],
 };