diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListener.java b/service/src/main/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListener.java
index aa3d2cf41..bed75259d 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListener.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListener.java
@@ -61,16 +61,14 @@ public class ProvisioningConnectListener implements WebSocketConnectListener {
   public void onWebSocketConnect(WebSocketSessionContext context) {
     openWebSocketCounter.countOpenWebSocket(context);
 
-    final Optional<ScheduledFuture<?>> maybeTimeoutFuture = context.getClient().supportsProvisioningSocketTimeouts()
-        ? Optional.of(timeoutExecutor.schedule(() ->
-            context.getClient().close(1000, "Timeout"), timeout.toSeconds(), TimeUnit.SECONDS))
-        : Optional.empty();
+    final ScheduledFuture<?> timeoutFuture = timeoutExecutor.schedule(() ->
+            context.getClient().close(1000, "Timeout"), timeout.toSeconds(), TimeUnit.SECONDS);
 
     final String provisioningAddress = generateProvisioningAddress();
 
     context.addWebsocketClosedListener((context1, statusCode, reason) -> {
       provisioningManager.removeListener(provisioningAddress);
-      maybeTimeoutFuture.ifPresent(future -> future.cancel(false));
+      timeoutFuture.cancel(false);
     });
 
     provisioningManager.addListener(provisioningAddress, message -> {
diff --git a/service/src/test/java/org/whispersystems/textsecuregcm/ProvisioningTimeoutIntegrationTest.java b/service/src/test/java/org/whispersystems/textsecuregcm/ProvisioningTimeoutIntegrationTest.java
index 5dab5765c..da79f811f 100644
--- a/service/src/test/java/org/whispersystems/textsecuregcm/ProvisioningTimeoutIntegrationTest.java
+++ b/service/src/test/java/org/whispersystems/textsecuregcm/ProvisioningTimeoutIntegrationTest.java
@@ -133,7 +133,6 @@ public class ProvisioningTimeoutIntegrationTest {
         .thenReturn(mock(ScheduledFuture.class));
 
     final ClientUpgradeRequest upgradeRequest = new ClientUpgradeRequest();
-    upgradeRequest.setHeader(WebsocketHeaders.X_SIGNAL_WEBSOCKET_TIMEOUT_HEADER, "");
     try (Session ignored = client.connect(testWebsocketListener,
         URI.create(String.format("ws://127.0.0.1:%d/websocket", DROPWIZARD_APP_EXTENSION.getLocalPort())),
         upgradeRequest).join()) {
@@ -151,22 +150,6 @@ public class ProvisioningTimeoutIntegrationTest {
     }
   }
 
-  @Test
-  public void websocketTimeoutNoHeader() throws IOException {
-    final TestProvisioningListener testWebsocketListener = new TestProvisioningListener();
-
-    final ClientUpgradeRequest upgradeRequest = new ClientUpgradeRequest();
-    try (Session ignored = client.connect(testWebsocketListener,
-        URI.create(String.format("ws://127.0.0.1:%d/websocket", DROPWIZARD_APP_EXTENSION.getLocalPort())),
-        upgradeRequest).join()) {
-      assertThat(testWebsocketListener.closeFuture()).isNotDone();
-
-      final TestApplication testApplication = DROPWIZARD_APP_EXTENSION.getApplication();
-      verify(testApplication.scheduler, never()).schedule(any(Runnable.class), anyLong(), any());
-      assertThat(testWebsocketListener.closeFuture()).isNotDone();
-    }
-  }
-
   @Test
   public void websocketTimeoutCancelled() throws IOException {
     final TestProvisioningListener testWebsocketListener = new TestProvisioningListener();
@@ -176,7 +159,6 @@ public class ProvisioningTimeoutIntegrationTest {
     doReturn(scheduled).when(testApplication.scheduler).schedule(any(Runnable.class), anyLong(), any());
 
     final ClientUpgradeRequest upgradeRequest = new ClientUpgradeRequest();
-    upgradeRequest.setHeader(WebsocketHeaders.X_SIGNAL_WEBSOCKET_TIMEOUT_HEADER, "");
     final Session session = client.connect(testWebsocketListener,
         URI.create(String.format("ws://127.0.0.1:%d/websocket", DROPWIZARD_APP_EXTENSION.getLocalPort())),
         upgradeRequest).join();
diff --git a/service/src/test/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListenerTest.java b/service/src/test/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListenerTest.java
index 2db878107..abe5eae6b 100644
--- a/service/src/test/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListenerTest.java
+++ b/service/src/test/java/org/whispersystems/textsecuregcm/websocket/ProvisioningConnectListenerTest.java
@@ -47,6 +47,8 @@ class ProvisioningConnectListenerTest {
   void onWebSocketConnect() {
     final WebSocketClient webSocketClient = mock(WebSocketClient.class);
     final WebSocketSessionContext context = new WebSocketSessionContext(webSocketClient);
+    final ScheduledFuture<?> scheduledFuture = mock(ScheduledFuture.class);
+    doReturn(scheduledFuture).when(scheduledExecutorService).schedule(any(Runnable.class), anyLong(), any());
 
     provisioningConnectListener.onWebSocketConnect(context);
     context.notifyClosed(1000, "Test");
@@ -81,7 +83,6 @@ class ProvisioningConnectListenerTest {
     final WebSocketClient webSocketClient = mock(WebSocketClient.class);
     final WebSocketSessionContext context = new WebSocketSessionContext(webSocketClient);
 
-    when(webSocketClient.supportsProvisioningSocketTimeouts()).thenReturn(true);
     final ScheduledFuture<?> scheduledFuture = mock(ScheduledFuture.class);
     doReturn(scheduledFuture).when(scheduledExecutorService).schedule(any(Runnable.class), anyLong(), any());
 
@@ -99,7 +100,6 @@ class ProvisioningConnectListenerTest {
     final WebSocketClient webSocketClient = mock(WebSocketClient.class);
     final WebSocketSessionContext context = new WebSocketSessionContext(webSocketClient);
 
-    when(webSocketClient.supportsProvisioningSocketTimeouts()).thenReturn(true);
     final ScheduledFuture<?> scheduledFuture = mock(ScheduledFuture.class);
     doReturn(scheduledFuture).when(scheduledExecutorService).schedule(any(Runnable.class), anyLong(), any());
 
@@ -111,13 +111,4 @@ class ProvisioningConnectListenerTest {
     verify(scheduledFuture).cancel(false);
     verify(webSocketClient, never()).close(anyInt(), any());
   }
-
-  @Test
-  void skipsTimeoutIfUnsupported() {
-    final WebSocketClient webSocketClient = mock(WebSocketClient.class);
-    final WebSocketSessionContext context = new WebSocketSessionContext(webSocketClient);
-    provisioningConnectListener.onWebSocketConnect(context);
-    verify(scheduledExecutorService, never())
-        .schedule(any(Runnable.class), eq(TIMEOUT.getSeconds()), eq(TimeUnit.SECONDS));
-  }
 }
diff --git a/websocket-resources/src/main/java/org/whispersystems/websocket/WebSocketClient.java b/websocket-resources/src/main/java/org/whispersystems/websocket/WebSocketClient.java
index 610ee7b4a..4f6d0d6a4 100644
--- a/websocket-resources/src/main/java/org/whispersystems/websocket/WebSocketClient.java
+++ b/websocket-resources/src/main/java/org/whispersystems/websocket/WebSocketClient.java
@@ -102,10 +102,6 @@ public class WebSocketClient {
     return WebsocketHeaders.parseReceiveStoriesHeader(value);
   }
 
-  public boolean supportsProvisioningSocketTimeouts() {
-    return session.getUpgradeRequest().getHeader(WebsocketHeaders.X_SIGNAL_WEBSOCKET_TIMEOUT_HEADER) != null;
-  }
-
   private long generateRequestId() {
     return Math.abs(SECURE_RANDOM.nextLong());
   }
diff --git a/websocket-resources/src/main/java/org/whispersystems/websocket/WebsocketHeaders.java b/websocket-resources/src/main/java/org/whispersystems/websocket/WebsocketHeaders.java
index 243263d91..73703005d 100644
--- a/websocket-resources/src/main/java/org/whispersystems/websocket/WebsocketHeaders.java
+++ b/websocket-resources/src/main/java/org/whispersystems/websocket/WebsocketHeaders.java
@@ -5,7 +5,6 @@ package org.whispersystems.websocket;
  */
 public class WebsocketHeaders {
   public final static String X_SIGNAL_RECEIVE_STORIES = "X-Signal-Receive-Stories";
-  public static final String X_SIGNAL_WEBSOCKET_TIMEOUT_HEADER = "X-Signal-Websocket-Timeout";
 
   public static boolean parseReceiveStoriesHeader(String s) {
     return "true".equals(s);