diff --git a/apps/jetty/.externalToolBuilders/jetty-makejar.launch b/apps/jetty/.externalToolBuilders/jetty-makejar.launch
index c12b8bd75..e842e5781 100644
--- a/apps/jetty/.externalToolBuilders/jetty-makejar.launch
+++ b/apps/jetty/.externalToolBuilders/jetty-makejar.launch
@@ -6,6 +6,12 @@
 <booleanAttribute key="org.eclipse.ant.ui.ATTR_TARGETS_UPDATED" value="true"/>
 <booleanAttribute key="org.eclipse.ant.ui.DEFAULT_VM_INSTALL" value="false"/>
 <stringAttribute key="org.eclipse.debug.core.ATTR_REFRESH_SCOPE" value="${project}"/>
+<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS">
+<listEntry value="/jetty"/>
+</listAttribute>
+<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES">
+<listEntry value="4"/>
+</listAttribute>
 <booleanAttribute key="org.eclipse.debug.ui.ATTR_LAUNCH_IN_BACKGROUND" value="false"/>
 <listAttribute key="org.eclipse.jdt.launching.CLASSPATH">
 <listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry containerPath=&quot;org.eclipse.jdt.launching.JRE_CONTAINER&quot; path=&quot;1&quot; type=&quot;4&quot;/&gt;&#10;"/>