diff --git a/drivers/mfd/altera-a10sr.c b/drivers/mfd/altera-a10sr.c
index c05aa4ff57fda3611284bd1ce9dafdffb3d0d68a..40ed65e5fb2ad87aea4db6b192c8f88d6eca7175 100644
--- a/drivers/mfd/altera-a10sr.c
+++ b/drivers/mfd/altera-a10sr.c
@@ -94,7 +94,7 @@ static bool altr_a10sr_reg_volatile(struct device *dev, unsigned int reg)
 	}
 }
 
-const struct regmap_config altr_a10sr_regmap_config = {
+static const struct regmap_config altr_a10sr_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,