diff --git a/backend/public/test_elevenlabs.php b/backend/public/test_elevenlabs.php
index 1b3f5ae..cef0515 100644
--- a/backend/public/test_elevenlabs.php
+++ b/backend/public/test_elevenlabs.php
@@ -50,7 +50,7 @@ if (empty($elApiKey)) {
     exit(1);
 }
 
-echo "ℹ️ [Config] API Key starts with: " . substr($elApiKey, 0, 6) . "...\n";
+echo "ℹ️ [Config] API Key length: " . strlen($elApiKey) . ", starts with: " . substr($elApiKey, 0, 6) . "..., ends with: " . substr($elApiKey, -4) . "\n";
 
 // 2. Execute Test Voice Generation using ElevenLabs
 echo "\n--- Generating Speech with ElevenLabs ---\n";