diff --git a/src/main/java/com/kamco/cd/training/common/utils/HeaderUtil.java b/src/main/java/com/kamco/cd/training/common/utils/HeaderUtil.java
index 42bd720..f91bae9 100644
--- a/src/main/java/com/kamco/cd/training/common/utils/HeaderUtil.java
+++ b/src/main/java/com/kamco/cd/training/common/utils/HeaderUtil.java
@@ -1,10 +1,12 @@
 package com.kamco.cd.training.common.utils;
 
 import jakarta.servlet.http.HttpServletRequest;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.context.request.RequestAttributes;
 import org.springframework.web.context.request.RequestContextHolder;
 import org.springframework.web.context.request.ServletRequestAttributes;
 
+@Slf4j
 public final class HeaderUtil {
 
   private HeaderUtil() {}
@@ -28,15 +30,21 @@ public final class HeaderUtil {
     RequestAttributes attrs = RequestContextHolder.getRequestAttributes();
 
     if (!(attrs instanceof ServletRequestAttributes servletAttrs)) {
+      log.info("!(attrs instanceof ServletRequestAttributes servletAttrs) : false");
       return false;
     }
 
     String acceptLanguage = servletAttrs.getRequest().getHeader("Accept-Language");
 
     if (acceptLanguage == null || acceptLanguage.isBlank()) {
+      log.info("!(acceptLanguage == null) : false");
       return false;
     }
 
+    log.info("acceptLanguage.toLowerCase(): {}", acceptLanguage.toLowerCase());
+    log.info(
+        "acceptLanguage.toLowerCase().startsWith(\"en\"): {}",
+        acceptLanguage.toLowerCase().startsWith("en"));
     return acceptLanguage.toLowerCase().startsWith("en");
   }
 }