diff --git a/test/test_puma_server.rb b/test/test_puma_server.rb
index edd7f4934d..48210fc682 100644
--- a/test/test_puma_server.rb
+++ b/test/test_puma_server.rb
@@ -383,11 +383,14 @@ def test_status_hook_fires_when_server_changes_states
   end
 
   def test_timeout_in_data_phase
-    @server.first_data_timeout = 2
+    @server.first_data_timeout = 1
     server_run
 
     sock = send_http "POST / HTTP/1.1\r\nHost: test.com\r\nContent-Type: text/plain\r\nContent-Length: 5\r\n\r\n"
 
+    sleep 1.15
+    sock << "Hello"
+
     data = sock.gets
 
     assert_equal "HTTP/1.1 408 Request Timeout\r\n", data