diff --git a/src/eth/tb/taxi_axis_baser_tx_32/test_taxi_axis_baser_tx_32.py b/src/eth/tb/taxi_axis_baser_tx_32/test_taxi_axis_baser_tx_32.py
index 08f3bae..e7a73af 100644
--- a/src/eth/tb/taxi_axis_baser_tx_32/test_taxi_axis_baser_tx_32.py
+++ b/src/eth/tb/taxi_axis_baser_tx_32/test_taxi_axis_baser_tx_32.py
@@ -235,7 +235,7 @@ async def run_test(dut, gbx_cfg=None, usxgmii_speed=None, payload_lengths=None,
         assert rx_frame.get_payload() == test_data
         assert rx_frame.check_fcs()
         assert rx_frame.ctrl is None
-        assert abs(rx_frame_sfd_ns - ptp_ts_ns - tb.clk_period*1) < 0.01
+        assert abs(rx_frame_sfd_ns - ptp_ts_ns - tb.clk_period*1) < 0.001
 
     assert tb.sink.empty()