diff --git a/indexing-service/src/main/java/io/druid/indexing/common/task/HadoopIndexTask.java b/indexing-service/src/main/java/io/druid/indexing/common/task/HadoopIndexTask.java
index bf609c81e44..730a4a8f7aa 100644
--- a/indexing-service/src/main/java/io/druid/indexing/common/task/HadoopIndexTask.java
+++ b/indexing-service/src/main/java/io/druid/indexing/common/task/HadoopIndexTask.java
@@ -150,8 +150,8 @@ public class HadoopIndexTask extends AbstractTask
     Thread.currentThread().setContextClassLoader(loader);
 
     final Set<URL> jobUrls = Sets.newHashSet();
-    jobUrls.addAll(extensionURLs);
     jobUrls.addAll(nonHadoopURLs);
+    jobUrls.addAll(extensionURLs);
 
     System.setProperty("druid.hadoop.internal.classpath", Joiner.on(File.pathSeparator).join(jobUrls));
 
diff --git a/services/src/main/java/io/druid/cli/CliHadoopIndexer.java b/services/src/main/java/io/druid/cli/CliHadoopIndexer.java
index 0ded97961b9..187cd341fb3 100644
--- a/services/src/main/java/io/druid/cli/CliHadoopIndexer.java
+++ b/services/src/main/java/io/druid/cli/CliHadoopIndexer.java
@@ -88,8 +88,8 @@ public class CliHadoopIndexer implements Runnable
       Thread.currentThread().setContextClassLoader(loader);
 
       final Set<URL> jobUrls = Sets.newHashSet();
-      jobUrls.addAll(extensionURLs);
       jobUrls.addAll(nonHadoopURLs);
+      jobUrls.addAll(extensionURLs);
 
       System.setProperty("druid.hadoop.internal.classpath", Joiner.on(File.pathSeparator).join(jobUrls));