diff --git a/src/eth/rtl/taxi_eth_mac_10g.sv b/src/eth/rtl/taxi_eth_mac_10g.sv
index e2b4dab..28a9504 100644
--- a/src/eth/rtl/taxi_eth_mac_10g.sv
+++ b/src/eth/rtl/taxi_eth_mac_10g.sv
@@ -63,7 +63,7 @@ module taxi_eth_mac_10g #
     input  wire logic                 xgmii_rx_valid = 1'b1,
     output wire logic [DATA_W-1:0]    xgmii_txd,
     output wire logic [CTRL_W-1:0]    xgmii_txc,
-    output wire logic                 xgmii_tx_valid = 1'b1,
+    output wire logic                 xgmii_tx_valid,
     input  wire logic [GBX_CNT-1:0]   tx_gbx_req_sync = '0,
     input  wire logic                 tx_gbx_req_stall = 1'b0,
     output wire logic [GBX_CNT-1:0]   tx_gbx_sync,
diff --git a/src/eth/rtl/taxi_eth_mac_10g_fifo.sv b/src/eth/rtl/taxi_eth_mac_10g_fifo.sv
index f2a1562..9a17a59 100644
--- a/src/eth/rtl/taxi_eth_mac_10g_fifo.sv
+++ b/src/eth/rtl/taxi_eth_mac_10g_fifo.sv
@@ -77,7 +77,7 @@ module taxi_eth_mac_10g_fifo #
     input  wire logic                 xgmii_rx_valid = 1'b1,
     output wire logic [DATA_W-1:0]    xgmii_txd,
     output wire logic [CTRL_W-1:0]    xgmii_txc,
-    output wire logic                 xgmii_tx_valid = 1'b1,
+    output wire logic                 xgmii_tx_valid,
     input  wire logic [GBX_CNT-1:0]   tx_gbx_req_sync = '0,
     input  wire logic                 tx_gbx_req_stall = 1'b0,
     output wire logic [GBX_CNT-1:0]   tx_gbx_sync,
diff --git a/src/eth/rtl/taxi_eth_phy_10g.sv b/src/eth/rtl/taxi_eth_phy_10g.sv
index 1616b4a..3267406 100644
--- a/src/eth/rtl/taxi_eth_phy_10g.sv
+++ b/src/eth/rtl/taxi_eth_phy_10g.sv
@@ -45,7 +45,7 @@ module taxi_eth_phy_10g #
     input  wire logic               xgmii_tx_valid = 1'b1,
     output wire logic [DATA_W-1:0]  xgmii_rxd,
     output wire logic [CTRL_W-1:0]  xgmii_rxc,
-    output wire logic               xgmii_rx_valid = 1'b1,
+    output wire logic               xgmii_rx_valid,
     output wire logic               tx_gbx_req_sync,
     output wire logic               tx_gbx_req_stall,
     input  wire logic               tx_gbx_sync = 1'b0,