diff --git a/src/AIHub/Controllers/ImageAnalyzerController.cs b/src/AIHub/Controllers/ImageAnalyzerController.cs
index 79aa384..f2780b8 100644
--- a/src/AIHub/Controllers/ImageAnalyzerController.cs
+++ b/src/AIHub/Controllers/ImageAnalyzerController.cs
@@ -51,7 +51,7 @@ public async Task<IActionResult> DenseCaptionImage(string image_url, string prom
             if (string.IsNullOrEmpty(AOAIsubscriptionKey))
             {
                 var credential = new DefaultAzureCredential();
-                httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", credential.GetToken(new TokenRequestContext(["https://api.openai.com/.default"])).Token);
+                httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", credential.GetToken(new TokenRequestContext(["https://cognitiveservices.azure.com/.default"])).Token);
             }
             else
             {