diff --git a/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java b/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
index 92f9c18da..2a1c685f9 100644
--- a/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
+++ b/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
@@ -562,7 +562,7 @@ protected ClassLoader configureClassLoader(ClassLoader loader) {
         };
         context.setResourceBase(explodedWarDir.getPath());
         context.setClassLoader(getClass().getClassLoader());
-        context.setConfigurations(new Configuration[]{new WebXmlConfiguration()});
+        context.setConfigurationDiscovered(true);
         context.addBean(new NoListenerConfiguration2(context));
         context.setServer(server);
         String compression = System.getProperty("jth.compression", "gzip");