diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c
index 3528d30ea650..75f07138a6fa 100644
--- a/drivers/i2c/busses/i2c-npcm7xx.c
+++ b/drivers/i2c/busses/i2c-npcm7xx.c
@@ -124,7 +124,7 @@ enum i2c_addr {
  * use this array to get the address or each register.
  */
 #define I2C_NUM_OWN_ADDR 10
-const int npcm_i2caddr[I2C_NUM_OWN_ADDR] = {
+static const int npcm_i2caddr[I2C_NUM_OWN_ADDR] = {
 	NPCM_I2CADDR1, NPCM_I2CADDR2, NPCM_I2CADDR3, NPCM_I2CADDR4,
 	NPCM_I2CADDR5, NPCM_I2CADDR6, NPCM_I2CADDR7, NPCM_I2CADDR8,
 	NPCM_I2CADDR9, NPCM_I2CADDR10,