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 709ee3588..c0381c711 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
@@ -708,6 +708,7 @@ class WebIntegrationFragment extends AbstractXtextGeneratorFragment {
 							new «'org.eclipse.jetty.webapp.MetaInfConfiguration'.typeRef»
 						]
 						setAttribute(«'org.eclipse.jetty.webapp.WebInfConfiguration'.typeRef».CONTAINER_JAR_PATTERN, '.*/«projectConfig.web.name.replace('.', '\\\\.')»/.*,.*\\.jar')
+						setInitParameter("org.mortbay.jetty.servlet.Default.useFileMappedBuffer", "false")
 					]
 					val log = new «'org.eclipse.jetty.util.log.Slf4jLog'.typeRef»(«grammar.serverLauncherClass.simpleName».name)
 					try {