diff --git a/avaje-jex/src/main/java/io/avaje/jex/core/CoreServiceManager.java b/avaje-jex/src/main/java/io/avaje/jex/core/CoreServiceManager.java
index 503ef50b..c57f8048 100644
--- a/avaje-jex/src/main/java/io/avaje/jex/core/CoreServiceManager.java
+++ b/avaje-jex/src/main/java/io/avaje/jex/core/CoreServiceManager.java
@@ -76,8 +76,8 @@ public <E> void jsonWriteStream(Iterator<E> iterator, OutputStream os) {
   @Override
   public void maybeClose(Object iterator) {
     if (iterator instanceof AutoCloseable closeable) {
-      try (closeable) {
-        // nothing
+      try {
+        closeable.close();
       } catch (Exception e) {
         throw new RuntimeException("Error closing iterator " + iterator, e);
       }
diff --git a/avaje-jex/src/test/java/io/avaje/jex/jdk/AutoCloseIterator.java b/avaje-jex/src/test/java/io/avaje/jex/jdk/AutoCloseIterator.java
index 01528d66..74541670 100644
--- a/avaje-jex/src/test/java/io/avaje/jex/jdk/AutoCloseIterator.java
+++ b/avaje-jex/src/test/java/io/avaje/jex/jdk/AutoCloseIterator.java
@@ -1,11 +1,12 @@
 package io.avaje.jex.jdk;
 
 import java.util.Iterator;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public class AutoCloseIterator<E> implements Iterator<E>, AutoCloseable {
 
   private final Iterator<E> it;
-  private volatile boolean closed;
+  private final AtomicBoolean closed = new AtomicBoolean(false);
 
   public AutoCloseIterator(Iterator<E> it) {
     this.it = it;
@@ -23,10 +24,10 @@ public E next() {
 
   @Override
   public void close() {
-    closed = true;
+    closed.set(true);
   }
 
   public boolean isClosed() {
-    return closed;
+    return closed.get();
   }
 }
diff --git a/avaje-jex/src/test/java/io/avaje/jex/jdk/FilterTest.java b/avaje-jex/src/test/java/io/avaje/jex/jdk/FilterTest.java
index afce6f70..74d82a70 100644
--- a/avaje-jex/src/test/java/io/avaje/jex/jdk/FilterTest.java
+++ b/avaje-jex/src/test/java/io/avaje/jex/jdk/FilterTest.java
@@ -6,15 +6,17 @@
 
 import java.net.http.HttpHeaders;
 import java.net.http.HttpResponse;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicReference;
+import java.util.concurrent.locks.LockSupport;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 class FilterTest {
 
-  static TestPair pair = init();
-  static AtomicReference<String> afterAll = new AtomicReference<>();
-  static AtomicReference<String> afterTwo = new AtomicReference<>();
+  static final TestPair pair = init();
+  static final AtomicReference<String> afterAll = new AtomicReference<>();
+  static final AtomicReference<String> afterTwo = new AtomicReference<>();
 
   static TestPair init() {
     final Jex app =
@@ -33,7 +35,7 @@ static TestPair init() {
                               if (ctx.url().contains("/two/")) {
                                 ctx.header("before-two", "set");
                               }
-                              ctx.jdkExchange().getRequestURI().getPath();
+                              // ctx.jdkExchange().getRequestURI().getPath();
                               chain.proceed();
                             })
                         .after(ctx -> afterAll.set("set"))
@@ -41,7 +43,6 @@ static TestPair init() {
                             (ctx, chain) -> {
                               chain.proceed();
                               if (ctx.url().contains("/two/")) {
-
                                 afterTwo.set("set");
                               }
                             })
@@ -74,6 +75,7 @@ void get() {
 
     clearAfter();
     res = pair.request().path("two").GET().asString();
+    LockSupport.parkNanos(TimeUnit.MILLISECONDS.toNanos(10));
     assertHasBeforeAfterAll(res);
     assertNoBeforeAfterTwo(res);
   }
diff --git a/avaje-jex/src/test/java/io/avaje/jex/jdk/JsonTest.java b/avaje-jex/src/test/java/io/avaje/jex/jdk/JsonTest.java
index e52c8f14..1ab2dcab 100644
--- a/avaje-jex/src/test/java/io/avaje/jex/jdk/JsonTest.java
+++ b/avaje-jex/src/test/java/io/avaje/jex/jdk/JsonTest.java
@@ -7,6 +7,8 @@
 import java.net.http.HttpHeaders;
 import java.net.http.HttpResponse;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.locks.LockSupport;
 import java.util.stream.Stream;
 
 import org.junit.jupiter.api.AfterAll;
@@ -69,6 +71,7 @@ void stream_viaIterator() {
     // expect client gets the expected stream of beans
     assertCollectedStream(beanStream);
     // assert AutoCloseable iterator on the server-side was closed
+    LockSupport.parkNanos(TimeUnit.MILLISECONDS.toNanos(10));
     assertThat(ITERATOR.isClosed()).isTrue();
   }