diff --git a/hutool-core/src/main/java/cn/hutool/v7/core/data/id/UUID.java b/hutool-core/src/main/java/cn/hutool/v7/core/data/id/UUID.java
index cc25a5d5b1..1a3c11b95a 100644
--- a/hutool-core/src/main/java/cn/hutool/v7/core/data/id/UUID.java
+++ b/hutool-core/src/main/java/cn/hutool/v7/core/data/id/UUID.java
@@ -439,7 +439,7 @@ public final class UUID implements java.io.Serializable, Comparable<UUID> {
 	 * @return 此{@code UUID} 的字符串表现形式
 	 */
 	public String toString(final boolean isSimple) {
-		final long mostSigBits = this.getLeastSignificantBits();
+		final long mostSigBits = this.getMostSignificantBits();
 		final long leastSigBits = this.getLeastSignificantBits();
 
 		final StringBuilder builder = StrUtil.builder(isSimple ? 32 : 36);