Index: src/main/java/org/apache/maven/plugin/ear/WebModule.java
===================================================================
--- src/main/java/org/apache/maven/plugin/ear/WebModule.java	(revision 809976)
+++ src/main/java/org/apache/maven/plugin/ear/WebModule.java	(working copy)
@@ -109,12 +109,12 @@
      * @param a the artifact
      * @return a context root for the artifact
      */
-    private static String getDefaultContextRoot( Artifact a )
+    private String getDefaultContextRoot( Artifact a )
     {
         if ( a == null )
         {
             throw new NullPointerException( "Artifact could not be null." );
         }
-        return "/" + a.getArtifactId();
+        return "/" + getBundleFileName().replaceAll("\\.war$", "");
     }
 }