diff --git a/core/src/main/java/com/taobao/arthas/core/advisor/Enhancer.java b/core/src/main/java/com/taobao/arthas/core/advisor/Enhancer.java
index 03ddb1c21..55a1400cd 100644
--- a/core/src/main/java/com/taobao/arthas/core/advisor/Enhancer.java
+++ b/core/src/main/java/com/taobao/arthas/core/advisor/Enhancer.java
@@ -300,6 +300,11 @@ public class Enhancer implements ClassFileTransformer {
                 affect.addMethodAndCount(inClassLoader, className, methodNode.name, methodNode.desc);
             }
 
+            // https://github.com/alibaba/arthas/issues/1223
+            if (classNode.version < Opcodes.V1_5) {
+                classNode.version = Opcodes.V1_5;
+            }
+
             byte[] enhanceClassByteArray = AsmUtils.toBytes(classNode, inClassLoader);
 
             // 增强成功，记录类