diff --git a/src/network/net_wd8003.c b/src/network/net_wd8003.c
index cb2d0bc35..c820e7444 100644
--- a/src/network/net_wd8003.c
+++ b/src/network/net_wd8003.c
@@ -548,7 +548,7 @@ wd_mca_write(int port, uint8_t val, void *priv)
 
     dev->base_address = (dev->pos_regs[2] & 0xfe) << 4;
     dev->ram_addr     = (dev->pos_regs[3] & 0xfc) << 12;
-    dev->irq          = irq[dev->pos_regs[5] & 0x02];
+    dev->irq          = irq[dev->pos_regs[5] & 0x03];
 
     /* Initialize the device if fully configured. */
     /* Register (new) I/O handler. */