diff --git a/test/src/test/java/hudson/util/ProcessTreeKillerTest.java b/test/src/test/java/hudson/util/ProcessTreeKillerTest.java
index 85ae3eb8565debcb580ec97480f90706d26c53e4..4c79b2f17aba640ee6539468420679b93854a869 100644
--- a/test/src/test/java/hudson/util/ProcessTreeKillerTest.java
+++ b/test/src/test/java/hudson/util/ProcessTreeKillerTest.java
@@ -35,35 +35,35 @@ public class ProcessTreeKillerTest {
     @Rule
     public JenkinsRule j = new JenkinsRule();
     private Process process;
-    
+
     @After
     public void tearDown() throws Exception {
         ProcessTree.vetoersExist = null;
         if (null != process)
             process.destroy();
-    }    
-    
+    }
+
     @Test
-	public void manualAbortProcess() throws Exception {
-		ProcessTree.enabled = true;
-		FreeStyleProject project = j.createFreeStyleProject();
+    public void manualAbortProcess() throws Exception {
+        ProcessTree.enabled = true;
+        FreeStyleProject project = j.createFreeStyleProject();
 
-		// this contains a maven project with a single test that sleeps 5s.
-		project.setScm(new ExtractResourceSCM(getClass().getResource(
-				"ProcessTreeKiller-test-project.jar")));
-		project.getBuildersList().add(new Maven("install", "maven"));
+        // this contains a maven project with a single test that sleeps 5s.
+        project.setScm(new ExtractResourceSCM(getClass().getResource(
+                "ProcessTreeKiller-test-project.jar")));
+        project.getBuildersList().add(new Maven("install", "maven"));
 
-		// build the project, wait until tests are running, then cancel.
-		project.scheduleBuild2(0).waitForStart();
+        // build the project, wait until tests are running, then cancel.
+        project.scheduleBuild2(0).waitForStart();
 
         FreeStyleBuild b = project.getLastBuild();
         b.doStop();
 
-		Thread.sleep(1000);
+        Thread.sleep(1000);
 
-		// will fail (at least on windows) if test process is still running
-		b.getWorkspace().deleteRecursive();
-	}
+        // will fail (at least on windows) if test process is still running
+        b.getWorkspace().deleteRecursive();
+    }
 
     @Test
     public void killNullProcess() throws Exception {
@@ -106,6 +106,7 @@ public class ProcessTreeKillerTest {
             assertTrue("Process should be dead", !spawner.proc.isAlive());
         }
     }
+
     public static final class SpawnBuilder extends TestBuilder {
         private Proc proc;
 
@@ -117,7 +118,7 @@ public class ProcessTreeKillerTest {
             return true;
         }
     }
-    
+
     @Test
     @Issue("JENKINS-9104")
     public void considersKillingVetos() throws Exception {
@@ -146,35 +147,35 @@ public class ProcessTreeKillerTest {
             // Means the process is still running
         }
     }
-    
+
     @Test
     @Issue("JENKINS-9104")
     public void considersKillingVetosOnSlave() throws Exception {
         // on some platforms where we fail to list any processes, this test will
         // just not work
         assumeTrue(ProcessTree.get() != ProcessTree.DEFAULT);
-        
+
         // Define a process we (shouldn't) kill
         ProcessBuilder pb = new ProcessBuilder();
         pb.environment().put("cookie", "testKeepDaemonsAlive");
-        
+
         if (File.pathSeparatorChar == ';') {
             pb.command("cmd");
         } else {
             pb.command("sleep", "5m");
         }
-        
+
         // Create an agent so we can tell it to kill the process
         Slave s = j.createSlave();
         s.toComputer().connect(false).get();
-        
+
         // Start the process
         process = pb.start();
-        
+
         // Call killall (somewhat roundabout though) to (not) kill it
         StringWriter out = new StringWriter();
         s.createLauncher(new StreamTaskListener(out)).kill(ImmutableMap.of("cookie", "testKeepDaemonsAlive"));
-        
+
         try {
             process.exitValue();
             fail("Process should have been excluded from the killing");