diff --git a/tests/http_timeouts_test.py b/tests/http_timeouts_test.py
index 9d69976..7bec3dc 100755
--- a/tests/http_timeouts_test.py
+++ b/tests/http_timeouts_test.py
@@ -73,9 +73,9 @@ if len(sys.argv) >= 3:
 if write:
     print 'Write to the client timeout'
     test_unfinished_read('GET /async/long HTTP/1.0',0,0)
-    test_unfinished_read('GET /async/long HTTP/1.0',timeout_time + 15,1000)
+    test_unfinished_read('GET /async/long HTTP/1.0',timeout_time + 20,1000)
     test_unfinished_read('GET /sync/long HTTP/1.0',0,0)
-    test_unfinished_read('GET /sync/long HTTP/1.0',timeout_time + 15,1000)
+    test_unfinished_read('GET /sync/long HTTP/1.0',timeout_time + 20,1000)
 else:
     print 'Read from client timeouts'
     test_unfinished_out('')