diff --git a/drivers/ethernet/RTL8169.asm b/drivers/ethernet/RTL8169.asm
index 5570cc1266..bf6bdef765 100644
--- a/drivers/ethernet/RTL8169.asm
+++ b/drivers/ethernet/RTL8169.asm
@@ -957,11 +957,17 @@ hw_start:
         GetRealAddr
         set_io  REG_TxDescStartAddr
         out     dx, eax
+        set_io  REG_TxDescStartAddr + 4
+        xor     eax, eax
+        out     dx, eax
 
         lea     eax, [device.rx_ring]
         GetRealAddr
         set_io  REG_RxDescStartAddr
         out     dx, eax
+        xor     eax, eax
+        set_io  REG_RxDescStartAddr + 4
+        out     dx, eax
 
         set_io  REG_Cfg9346
         mov     al, CFG_9346_Lock