diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 227df987..27da9b75d 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -122,6 +122,7 @@
 /* Avoid conditionals by using array */
 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
+static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
 
 /* This driver supports yukon2 chipset only */
 static const char *yukon2_name[] = {
@@ -1050,7 +1051,7 @@
 
 	/* Enable interrupts from phy/mac for port */
 	imask = sky2_read32(hw, B0_IMSK);
-	imask |= (port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
+	imask |= portirq_msk[port];
 	sky2_write32(hw, B0_IMSK, imask);
 
 	return 0;
@@ -1401,7 +1402,7 @@
 
 	/* Disable port IRQ */
 	imask = sky2_read32(hw, B0_IMSK);
-	imask &= ~(sky2->port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
+	imask &= ~portirq_msk[port];
 	sky2_write32(hw, B0_IMSK, imask);
 
 	/* turn off LED's */