diff --git a/liteeth/phy/pcs_1000basex.py b/liteeth/phy/pcs_1000basex.py
index 8892a5e..8aeff39 100644
--- a/liteeth/phy/pcs_1000basex.py
+++ b/liteeth/phy/pcs_1000basex.py
@@ -394,7 +394,7 @@ def __init__(self, lsb_first=False, check_period=6e-3, more_ack_time=10e-3):
             If(rx_config_reg_abi.o,
                 NextState("AUTONEG_WAIT_ACK")
             ),
-            If(checker_tick & ~checker_ok,
+            If((checker_tick & ~checker_ok) | rx_config_reg_ack.o,
                 self.restart.eq(1),
                 NextState("AUTONEG_BREAKLINK")
             )