diff --git a/maxkey-core/src/main/java/org/dromara/maxkey/constants/ConstsBoolean.java b/maxkey-core/src/main/java/org/dromara/maxkey/constants/ConstsBoolean.java
index ef28a2a3..738987fa 100644
--- a/maxkey-core/src/main/java/org/dromara/maxkey/constants/ConstsBoolean.java
+++ b/maxkey-core/src/main/java/org/dromara/maxkey/constants/ConstsBoolean.java
@@ -52,7 +52,7 @@ public class ConstsBoolean {
     }
     
     public static boolean isYes(String value) {
-        return "YES" == value.toUpperCase();
+        return "YES".equalsIgnoreCase(value);
     }
 
     public static boolean isFalse(int value) {