diff --git a/zlt-commons/zlt-auth-client-spring-boot-starter/src/main/java/com/central/oauth2/common/util/AuthUtils.java b/zlt-commons/zlt-auth-client-spring-boot-starter/src/main/java/com/central/oauth2/common/util/AuthUtils.java
index 948e3602e952b6bb3ae3c394345d4b6f0d064290..bad4669f07a0d3d44f2d96114fa8d4b5c960c54c 100644
--- a/zlt-commons/zlt-auth-client-spring-boot-starter/src/main/java/com/central/oauth2/common/util/AuthUtils.java
+++ b/zlt-commons/zlt-auth-client-spring-boot-starter/src/main/java/com/central/oauth2/common/util/AuthUtils.java
@@ -52,7 +52,7 @@ public class AuthUtils {
         Enumeration<String> headers = request.getHeaders(CommonConstant.TOKEN_HEADER);
         while (headers.hasMoreElements()) {
             String value = headers.nextElement();
-            if ((value.toLowerCase().startsWith(OAuth2AccessToken.BEARER_TYPE))) {
+            if ((value.startsWith(OAuth2AccessToken.BEARER_TYPE))) {
                 String authHeaderValue = value.substring(OAuth2AccessToken.BEARER_TYPE.length()).trim();
                 int commaIndex = authHeaderValue.indexOf(',');
                 if (commaIndex > 0) {