diff --git a/backend/core/Services/SiroGeminiService.php b/backend/core/Services/SiroGeminiService.php
index c92fcbc7..45a39f78 100644
--- a/backend/core/Services/SiroGeminiService.php
+++ b/backend/core/Services/SiroGeminiService.php
@@ -187,7 +187,7 @@ class SiroGeminiService {
             $text = $data['candidates'][0]['content']['parts'][0]['text'] ?? '';
             return ['status' => 'success', 'html_report' => $text];
         } else {
-            error_log(\"[SiroGeminiService] HTTP $httpCode in analyzeCompetitorFormulas: $response\");
+            error_log("[SiroGeminiService] HTTP $httpCode in analyzeCompetitorFormulas: $response");
             return null;
         }
     }