diff --git a/drivers/regulator/mc13xxx.h b/drivers/regulator/mc13xxx.h
index 8343a25888d2f95c9df278dc5ab37c67415ef05b..eaff5510b6df62cc6096c1e6683a4601cdb50240 100644
--- a/drivers/regulator/mc13xxx.h
+++ b/drivers/regulator/mc13xxx.h
@@ -32,7 +32,6 @@ struct mc13xxx_regulator_priv {
 	struct regulator_dev *regulators[];
 };
 
-extern int mc13xxx_sw_regulator(struct regulator_dev *rdev);
 extern int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev,
 		int min_uV, int max_uV, unsigned *selector);
 extern int mc13xxx_fixed_regulator_get_voltage(struct regulator_dev *rdev);