Index: src/main/java/org/apache/maven/plugin/ear/WebModule.java
===================================================================
--- src/main/java/org/apache/maven/plugin/ear/WebModule.java	(revision 487038)
+++ src/main/java/org/apache/maven/plugin/ear/WebModule.java	(arbetskopia)
@@ -40,6 +40,8 @@
 
     protected static final String CONTEXT_ROOT_FIELD = "context-root";
 
+    protected static final String ATTR_ID = "id";
+
     private String contextRoot;
 
     public WebModule()
@@ -55,6 +57,7 @@
     public void appendModule( XMLWriter writer, String version )
     {
         writer.startElement( MODULE_ELEMENT );
+        writer.addAttribute( ATTR_ID, getGroupId() + "." + getArtifactId() );
         writer.startElement( WEB_MODULE );
         writer.startElement( WEB_URI_FIELD );
         writer.writeText( getUri() );