diff --git a/apps/server/src/services/auto-mode-service.ts b/apps/server/src/services/auto-mode-service.ts
index ba438e6d..edd24b35 100644
--- a/apps/server/src/services/auto-mode-service.ts
+++ b/apps/server/src/services/auto-mode-service.ts
@@ -1092,7 +1092,7 @@ When done, summarize what you implemented and any notes for the developer.`;
             if (block.text && (block.text.includes("Invalid API key") ||
                 block.text.includes("authentication_failed") ||
                 block.text.includes("Fix external API key"))) {
-              const isCodex = finalModel.startsWith("gpt-") || finalModel.startsWith("o");
+              const isCodex = finalModel.startsWith("gpt-")
               const errorMsg = isCodex
                 ? "Authentication failed: Invalid or expired API key. " +
                   "Please check your OPENAI_API_KEY or run 'codex login' to re-authenticate."