diff --git a/drivers/marvell/mci.c b/drivers/marvell/mci.c
index 3a9859c..06fe88e 100644
--- a/drivers/marvell/mci.c
+++ b/drivers/marvell/mci.c
@@ -245,7 +245,7 @@
 				MCI_PHY_CTRL_PHY_ADDR_MSB_OFFSET)
 #define MCI_PHY_CTRL_PIDI_MODE_OFFSET			31
 #define MCI_PHY_CTRL_PIDI_MODE				\
-				(1 << MCI_PHY_CTRL_PIDI_MODE_OFFSET)
+				(1U << MCI_PHY_CTRL_PIDI_MODE_OFFSET)
 
 /* Number of times to wait for the MCI link ready after MCI configurations
  * Normally takes 34-35 successive reads