diff --git a/chrom-ext/background.js b/chrom-ext/background.js
index d76bb30..27b86e5 100644
--- a/chrom-ext/background.js
+++ b/chrom-ext/background.js
@@ -45,7 +45,12 @@ async function handleGenerate({ text, lang, tone, angle }, tabId) {
         return;
     }
 
-    const payload = { originalPost: text, language: lang, tone, angle };
+    const payload = {
+        originalPost: text,
+        language: lang,
+        tone: tone?tone.toLowerCase():undefined,
+        angle: angle?angle.toLowerCase():undefined,
+    };
     console.log('[XAI Background] 📤 Payload:', JSON.stringify(payload, null, 2));
     console.log('[XAI Background] 🌐 URL:', config.apiUrl);