diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/SysLoginService.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/SysLoginService.java
index d280318f1..522e32b74 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/SysLoginService.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/SysLoginService.java
@@ -18,6 +18,7 @@ import com.ruoyi.common.helper.LoginHelper;
 import com.ruoyi.common.utils.DateUtils;
 import com.ruoyi.common.utils.MessageUtils;
 import com.ruoyi.common.utils.ServletUtils;
+import com.ruoyi.common.utils.StringUtils;
 import com.ruoyi.common.utils.redis.RedisUtils;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -104,7 +105,7 @@ public class SysLoginService {
      * @param uuid     唯一标识
      */
     public void validateCaptcha(String username, String code, String uuid, HttpServletRequest request) {
-        String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
+        String verifyKey = Constants.CAPTCHA_CODE_KEY + StringUtils.defaultString(uuid, "");
         String captcha = RedisUtils.getCacheObject(verifyKey);
         RedisUtils.deleteObject(verifyKey);
         if (captcha == null) {
diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/SysRegisterService.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/SysRegisterService.java
index 396f03543..8c7274ef8 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/SysRegisterService.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/SysRegisterService.java
@@ -12,6 +12,7 @@ import com.ruoyi.common.exception.user.CaptchaExpireException;
 import com.ruoyi.common.exception.user.UserException;
 import com.ruoyi.common.utils.MessageUtils;
 import com.ruoyi.common.utils.ServletUtils;
+import com.ruoyi.common.utils.StringUtils;
 import com.ruoyi.common.utils.redis.RedisUtils;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -71,7 +72,7 @@ public class SysRegisterService {
      * @return 结果
      */
     public void validateCaptcha(String username, String code, String uuid, HttpServletRequest request) {
-        String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
+        String verifyKey = Constants.CAPTCHA_CODE_KEY + StringUtils.defaultString(uuid, "");
         String captcha = RedisUtils.getCacheObject(verifyKey);
         RedisUtils.deleteObject(verifyKey);
         if (captcha == null) {