diff --git a/test/core/xds/xds_client_test.cc b/test/core/xds/xds_client_test.cc
index f2e82afb87c07..35968ab1ca0a2 100644
--- a/test/core/xds/xds_client_test.cc
+++ b/test/core/xds/xds_client_test.cc
@@ -759,17 +759,15 @@ class XdsClientTest : public ::testing::Test {
 
   // Sets transport_factory_ and initializes xds_client_ with the
   // specified bootstrap config.
-  void InitXdsClient(
-      FakeXdsBootstrap::Builder bootstrap_builder = FakeXdsBootstrap::Builder(),
-      Duration resource_request_timeout = Duration::Seconds(15)) {
+  void InitXdsClient(FakeXdsBootstrap::Builder bootstrap_builder =
+                         FakeXdsBootstrap::Builder()) {
     transport_factory_ = MakeRefCounted<FakeXdsTransportFactory>(
         []() { FAIL() << "Multiple concurrent reads"; }, event_engine_);
     auto metrics_reporter = std::make_unique<MetricsReporter>(event_engine_);
     metrics_reporter_ = metrics_reporter.get();
     xds_client_ = MakeRefCounted<XdsClient>(
         bootstrap_builder.Build(), transport_factory_, event_engine_,
-        std::move(metrics_reporter), "foo agent", "foo version",
-        resource_request_timeout * grpc_test_slowdown_factor());
+        std::move(metrics_reporter), "foo agent", "foo version");
   }
 
   // Starts and cancels a watch for a Foo resource.
@@ -2420,9 +2418,7 @@ TEST_F(XdsClientTest, StreamClosedByServerWithoutSeeingResponse) {
 }
 
 TEST_F(XdsClientTest, ConnectionFails) {
-  // Lower resources-does-not-exist timeout, to make sure that we're not
-  // triggering that here.
-  InitXdsClient(FakeXdsBootstrap::Builder(), Duration::Seconds(3));
+  InitXdsClient();
   // Tell transport to let us manually trigger completion of the
   // send_message ops to XdsClient.
   transport_factory_->SetAutoCompleteMessagesFromClient(false);
@@ -2516,7 +2512,7 @@ TEST_F(XdsClientTest, ConnectionFails) {
 }
 
 TEST_F(XdsClientTest, ResourceDoesNotExistUponTimeout) {
-  InitXdsClient(FakeXdsBootstrap::Builder(), Duration::Seconds(1));
+  InitXdsClient();
   // Start a watch for "foo1".
   auto watcher = StartFooWatch("foo1");
   // Watcher should initially not see any resource reported.
@@ -2602,8 +2598,7 @@ TEST_F(XdsClientTest, ResourceDoesNotExistUponTimeout) {
 }
 
 TEST_F(XdsClientTest, ResourceDoesNotExistAfterStreamRestart) {
-  // Lower resources-does-not-exist timeout so test finishes faster.
-  InitXdsClient(FakeXdsBootstrap::Builder(), Duration::Seconds(3));
+  InitXdsClient();
   // Metrics should initially be empty.
   EXPECT_THAT(metrics_reporter_->resource_updates_valid(),
               ::testing::ElementsAre());
@@ -2717,9 +2712,7 @@ TEST_F(XdsClientTest, ResourceDoesNotExistAfterStreamRestart) {
 }
 
 TEST_F(XdsClientTest, DoesNotExistTimerNotStartedUntilSendCompletes) {
-  // Lower resources-does-not-exist timeout, to make sure that we're not
-  // triggering that here.
-  InitXdsClient(FakeXdsBootstrap::Builder(), Duration::Seconds(3));
+  InitXdsClient();
   // Tell transport to let us manually trigger completion of the
   // send_message ops to XdsClient.
   transport_factory_->SetAutoCompleteMessagesFromClient(false);
@@ -2802,7 +2795,7 @@ TEST_F(XdsClientTest, DoesNotExistTimerNotStartedUntilSendCompletes) {
 // update containing that resource.
 TEST_F(XdsClientTest,
        ResourceDoesNotExistUnsubscribeAndResubscribeWhileSendMessagePending) {
-  InitXdsClient(FakeXdsBootstrap::Builder(), Duration::Seconds(1));
+  InitXdsClient();
   // Tell transport to let us manually trigger completion of the
   // send_message ops to XdsClient.
   transport_factory_->SetAutoCompleteMessagesFromClient(false);
@@ -2951,9 +2944,7 @@ TEST_F(XdsClientTest,
 }
 
 TEST_F(XdsClientTest, DoNotSendDoesNotExistForCachedResource) {
-  // Lower resources-does-not-exist timeout, to make sure that we're not
-  // triggering that here.
-  InitXdsClient(FakeXdsBootstrap::Builder(), Duration::Seconds(3));
+  InitXdsClient();
   // Start a watch for "foo1".
   auto watcher = StartFooWatch("foo1");
   // Watcher should initially not see any resource reported.