diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index c7c4574729b190c6358e57e7f02d04427be3c029..de3155b21285df91c29def0571409e28973bdbdc 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -289,6 +289,7 @@ int power_supply_uevent(struct device *dev, char **envp, int num_envp,
 		if (ret)
 			goto out;
 	}
+	envp[i] = NULL;
 
 out:
 	free_page((unsigned long)prop_buf);