diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ReceivePackAdvertiseRefsHookTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ReceivePackAdvertiseRefsHookTest.java
index b77042220..9cc6cfd39 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ReceivePackAdvertiseRefsHookTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ReceivePackAdvertiseRefsHookTest.java
@@ -259,6 +259,7 @@ public void testSuccess() throws Exception {
 		try (TransportLocal t = newTransportLocalWithStrictValidation()) {
 			t.setPushThin(true);
 			r = t.push(PM, Collections.singleton(u));
+			dst.close();
 		}
 
 		assertNotNull("have result", r);