diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
index f54bd451c3c..e3544ff91f2 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
@@ -1178,8 +1178,7 @@ public class ResourceManager extends CompositeService
 
       if (null == onDiskPath) {
         String war = "hadoop-yarn-ui-" + VersionInfo.getVersion() + ".war";
-        URLClassLoader cl = (URLClassLoader) ClassLoader.getSystemClassLoader();
-        URL url = cl.findResource(war);
+        URL url = getClass().getClassLoader().getResource(war);
 
         if (null == url) {
           onDiskPath = getWebAppsPath("ui2");