diff --git a/liteflow-core/src/main/resources/dtd/liteflow.dtd b/liteflow-core/src/main/resources/dtd/liteflow.dtd
index 115cf2db1..a5486a47d 100644
--- a/liteflow-core/src/main/resources/dtd/liteflow.dtd
+++ b/liteflow-core/src/main/resources/dtd/liteflow.dtd
@@ -14,4 +14,5 @@
         language (groovy|js|python|lua) #IMPLIED
         >
 <!ATTLIST chain
-        name CDATA>
\ No newline at end of file
+        id CDATA #REQUIRED
+        >
\ No newline at end of file