diff --git a/core/src/test/java/io/undertow/websockets/core/protocol/WebSocketTimeoutTestCase.java b/core/src/test/java/io/undertow/websockets/core/protocol/WebSocketTimeoutTestCase.java
index 08a4573550..b6ed4dd8c0 100644
--- a/core/src/test/java/io/undertow/websockets/core/protocol/WebSocketTimeoutTestCase.java
+++ b/core/src/test/java/io/undertow/websockets/core/protocol/WebSocketTimeoutTestCase.java
@@ -111,7 +111,7 @@ protected void onFullTextMessage(WebSocketChannel channel, BufferedTextMessage m
         latch.getIoFuture().get();
 
         final long watchStart = System.currentTimeMillis();
-        final long watchTimeout = System.currentTimeMillis() + TESTABLE_TIMEOUT_VALUE + 500;
+        final long watchTimeout = System.currentTimeMillis() + TESTABLE_TIMEOUT_VALUE + 1000;
         final FutureResult<Long> timeoutLatch = new FutureResult<Long>();
         ReadTimeoutChannelGuard readTimeoutChannelGuard = new ReadTimeoutChannelGuard(client, timeoutLatch, watchTimeout);
 
@@ -124,7 +124,7 @@ protected void onFullTextMessage(WebSocketChannel channel, BufferedTextMessage m
         } else {
             long timeSpent = watchTimeEnd - watchStart;
             //let's be generous and give 150ms diff( there is "fuzz" coded for 50ms in undertow as well
-            if(!(timeSpent <= TESTABLE_TIMEOUT_VALUE + 150)) {
+            if(!(timeSpent <= TESTABLE_TIMEOUT_VALUE + 250)) {
                 Assert.fail("Timeout did not happen... in time. Socket timeout out in '" + timeSpent + "' ms, supposed to happen in '" + TESTABLE_TIMEOUT_VALUE + "' ms.");
             }
         }