diff --git a/hutool-crypto/src/test/java/org/dromara/hutool/crypto/symmetric/AESTest.java b/hutool-crypto/src/test/java/org/dromara/hutool/crypto/symmetric/AESTest.java
index a89cd93e1..f7f5d8aa2 100644
--- a/hutool-crypto/src/test/java/org/dromara/hutool/crypto/symmetric/AESTest.java
+++ b/hutool-crypto/src/test/java/org/dromara/hutool/crypto/symmetric/AESTest.java
@@ -19,9 +19,7 @@ package org.dromara.hutool.crypto.symmetric;
 import org.dromara.hutool.core.codec.binary.Base64;
 import org.dromara.hutool.core.codec.binary.HexUtil;
 import org.dromara.hutool.core.util.RandomUtil;
-import org.dromara.hutool.crypto.KeyUtil;
-import org.dromara.hutool.crypto.Mode;
-import org.dromara.hutool.crypto.Padding;
+import org.dromara.hutool.crypto.*;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
@@ -148,4 +146,10 @@ public class AESTest {
 		final String decryptStr = aes.decryptStr(encrypt);
 		Assertions.assertEquals(phone, decryptStr);
 	}
+
+	@Test
+	void issue3766Test() {
+		Assertions.assertThrows(CryptoException.class, ()->
+			SecureUtil.aes("8888888888888888".getBytes()).decryptStr("哈哈"));
+	}
 }