diff --git a/drivers/net/phy/marvell/marvell_tai.c b/drivers/net/phy/marvell/marvell_tai.c
index f6608a0986ca..89ac3bb349c3 100644
--- a/drivers/net/phy/marvell/marvell_tai.c
+++ b/drivers/net/phy/marvell/marvell_tai.c
@@ -233,8 +233,8 @@ int marvell_tai_get(struct marvell_tai **taip, struct phy_device *phydev)
 	tai->cyclecounter.mult = tai->cc_mult;
 	tai->cyclecounter.shift = 28;
 
-	overflow_ms = (1ULL << 32 * tai->cc_mult * 1000) >>
-			tai->cyclecounter.shift;
+	overflow_ms = (((1ULL << 32 ) * tai->cc_mult) >>
+		       tai->cyclecounter.shift) / 1000000ULL;
 	tai->half_overflow_period = msecs_to_jiffies(overflow_ms / 2);
 
 	timecounter_init(&tai->timecounter, &tai->cyclecounter,