diff --git a/test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java b/test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
index fb3037b7e925981950c2a7c6a05c9bc1c457895c..ab0b7d6ddf1e7f8e70d61fa283723960c1832473 100644
--- a/test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
+++ b/test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
@@ -223,6 +223,13 @@ public abstract class HudsonTestCase extends TestCase {
         return new LocalLauncher(new StreamTaskListener(System.out));
     }
 
+    /**
+     * Allocates a new temporary directory for the duration of this test.
+     */
+    protected File createTmpDir() throws IOException {
+        return TestEnvironment.get().temporaryDirectoryAllocator.allocate();
+    }
+
     /**
      * Returns the last item in the list.
      */
diff --git a/test/src/test/java/hudson/slaves/JNLPLauncherTest.java b/test/src/test/java/hudson/slaves/JNLPLauncherTest.java
index c8366763235d74ffb54724bb58e622e457a19395..0b0a637869d040c852b2452934f72a8c554e1b18 100644
--- a/test/src/test/java/hudson/slaves/JNLPLauncherTest.java
+++ b/test/src/test/java/hudson/slaves/JNLPLauncherTest.java
@@ -43,7 +43,9 @@ public class JNLPLauncherTest extends HudsonTestCase {
         ArgumentListBuilder args = new ArgumentListBuilder();
         args.add("java","-jar");
         args.add(Which.jarFile(netx.jnlp.runtime.JNLPRuntime.class).getAbsolutePath());
-        args.add("-headless","-nosecurity","-jnlp", getJnlpLink(c));
+        args.add("-headless","-basedir");
+        args.add(createTmpDir());
+        args.add("-nosecurity","-jnlp", getJnlpLink(c));
         return args;
     }