diff --git a/lib/Controller/SpeechToTextApiController.php b/lib/Controller/SpeechToTextApiController.php
index bcb2165f..5effa2a2 100644
--- a/lib/Controller/SpeechToTextApiController.php
+++ b/lib/Controller/SpeechToTextApiController.php
@@ -95,7 +95,7 @@ public function getTranscript(int $id): DataResponse {
 	 * 400: Starting task is not possible
 	 */
 	#[NoAdminRequired]
-	public function transcribeAudio(string $appId = Application::APP_ID, string $identifier = ''): DataResponse {
+	public function transcribeAudio(string $appId = 'assistant', string $identifier = ''): DataResponse {
 		$audioData = $this->request->getUploadedFile('audioData');
 
 		if ($audioData['error'] !== 0) {
@@ -157,7 +157,7 @@ public function transcribeAudio(string $appId = Application::APP_ID, string $ide
 	 * 404: File not found
 	 */
 	#[NoAdminRequired]
-	public function transcribeFile(string $path, string $appId = Application::APP_ID, string $identifier = ''): DataResponse {
+	public function transcribeFile(string $path, string $appId = 'assistant', string $identifier = ''): DataResponse {
 		if ($path === '') {
 			return new DataResponse('Empty file path received', Http::STATUS_BAD_REQUEST);
 		}
diff --git a/openapi.json b/openapi.json
index 1f30b2ac..4bd6fef4 100644
--- a/openapi.json
+++ b/openapi.json
@@ -2357,18 +2357,18 @@
                         "name": "appId",
                         "in": "query",
                         "description": "App id to be set in the created task",
-                        "required": true,
                         "schema": {
-                            "type": "string"
+                            "type": "string",
+                            "default": "assistant"
                         }
                     },
                     {
                         "name": "identifier",
                         "in": "query",
                         "description": "Identifier to be set in the created task",
-                        "required": true,
                         "schema": {
-                            "type": "string"
+                            "type": "string",
+                            "default": ""
                         }
                     },
                     {
@@ -2531,18 +2531,18 @@
                         "name": "appId",
                         "in": "query",
                         "description": "App id to be set in the created task",
-                        "required": true,
                         "schema": {
-                            "type": "string"
+                            "type": "string",
+                            "default": "assistant"
                         }
                     },
                     {
                         "name": "identifier",
                         "in": "query",
                         "description": "Identifier to be set in the created task",
-                        "required": true,
                         "schema": {
-                            "type": "string"
+                            "type": "string",
+                            "default": ""
                         }
                     },
                     {