diff --git a/can-calc-bit-timing.c b/can-calc-bit-timing.c
index 54e1242..82fdda8 100644
--- a/can-calc-bit-timing.c
+++ b/can-calc-bit-timing.c
@@ -695,7 +695,7 @@ static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt,
 			       const struct can_bittiming_const *btc)
 {
 	struct can_priv *priv = netdev_priv(dev);
-	int tseg1, alltseg;
+	unsigned int tseg1, alltseg;
 	u64 brp64, v64;
 
 	tseg1 = bt->prop_seg + bt->phase_seg1;