diff --git a/plugins/org.eclipse.xtext.xtext.generator/src/org/eclipse/xtext/xtext/generator/web/WebIntegrationFragment.xtend b/plugins/org.eclipse.xtext.xtext.generator/src/org/eclipse/xtext/xtext/generator/web/WebIntegrationFragment.xtend
index a19237cd7..706557175 100644
--- a/plugins/org.eclipse.xtext.xtext.generator/src/org/eclipse/xtext/xtext/generator/web/WebIntegrationFragment.xtend
+++ b/plugins/org.eclipse.xtext.xtext.generator/src/org/eclipse/xtext/xtext/generator/web/WebIntegrationFragment.xtend
@@ -670,7 +670,7 @@ class WebIntegrationFragment extends AbstractGeneratorFragment2 {
 							new «'org.eclipse.jetty.webapp.WebInfConfiguration'.typeRef»,
 							new «'org.eclipse.jetty.webapp.MetaInfConfiguration'.typeRef»
 						]
-						setAttribute(«'org.eclipse.jetty.webapp.WebInfConfiguration'.typeRef».CONTAINER_JAR_PATTERN, '.*')
+						setAttribute(«'org.eclipse.jetty.webapp.WebInfConfiguration'.typeRef».CONTAINER_JAR_PATTERN, '.*/«projectConfig.webProjectName.replace('.', '\\\\.')»/.*,.*/org\\.eclipse\\.xtext\\.web.*,.*/org\\.webjars.*')
 					]
 					val log = new «'org.eclipse.jetty.util.log.Slf4jLog'.typeRef»(«grammar.serverLauncherClass.simpleName».name)
 					try {